Storage course HCIA 1 – Storage technology trends 1.1 Which of the following are data types? Structured data Semi – structured data Unstructured data Massive amounts of data 1.2 Which of the following statements about storage are correct? Storage refers to disks Storage systems consists of storage hardware, software, and solutions Storage types include block storage, file storage, and object storage File storage provides block services 1.3 Which are characteristics of cloud storage? Convergence Open Scale-up Elasticity 1.4 Which of the following are the objectives of integrating AI into storage? Simple Efficient High power consumption Easy to use 2 – Storage Basic Technologies 2.1 Which of the following statements about Huawei OceanStor all-flash storage is false? Supports SSDs and NVMe disks F Supports SAS disks V Supports HDDs F Supports palm-sized SSDs V
2.2 Which RAID level would you recommend if a user focuses on reliability and random write performance? RAID 10 RAID 1 RAID 0 2.3 Which networks are included in FC topologies? Arbitrated loop network Point-to-point network Switching network Dual-switching network 2.4 Which PCIe versions are available currently? PCIe 1.0 PCIe 2.0 PCIe 3.0 PCIe 4.0 2.5 Which of the following are file sharing protocols? HTTP protocol iSCSI protocol NFS protocol CIFS protocol 2.6 Which of the following are included in distributed storage networking? Management network Frontend service network Frontend storage network Backend storage network 2.7 Which of the following protocols are commonly used in SAN networking? FC iSCSI CIFS NFS
2.8 Which of the following storage services are supported by Huawei distributed storage (such as Huawei OceanStor 110D)? Block storage File storage Object storage HDFS storage Linked storage 2.9 What are the types of SSDs? SLC MLC TLC QLC 2.10 Which of the following can be used to measure the performance of an HDD? Disk capacity Rotation speed Data transfer rate Average access time 2.11 Scale-up is a method in which disk enclosures are continuously added to existing storage systems to cope with increasing data volumes Right 2.12 Data access will remain unaffected wen any disk in a RAID 10 array fails Right 3– Storage Common Advanced Technologies 3.1 Which status must a pair be before consistency splitting during LUN migration? Migrating Stop Normal Migrated
3.2 Which of the following migration policies can be set for LUNs? Automatic migration Migration to the higher-performance tier Migration to the lower-performance tier No migration 3.3 Which of the following statements are correct? Synchronous replication synchronizes data in real time to maximize data consistency and minimize data loss in the event of a disaster Asynchronous replication performs periodic data synchrnization, minimizing service performance deterioration caused by data transmission latency HyperReplication does not require a license Synchronous replication uses snapshots for replication 3.4 Which of the following statements about consistency groups are correct? If multiple LUNs at the primary end have write dependency relationships, replication consistency groups must be configured to ensure that the secondary LUN salso have write dependecy relationships Consistency group is only used to manage the replication relationship between multiple LUNs If one member in a consistency group is faulty, all members in the consistency group are unavailable 3.5 SmartTier cannot be enabled for a storage pool whose member disks are of the same type Right 3.6 A source LUN can form multiple HyperClone pairs with different target LUNs. A target LUN can be added to only one HyperClone pair Right 4– Storage Business Continuity Solutions 4.1 Which is not a common backup topology? LAN-Base LAN-Free Server-Free Server-Base
4.2 Which are not common backup types? Full backup Incremental backup Extension backup Elastic backup 4.3 Data replication is the core of a DR technology. On which three layers are replication devices distributed? Application layer Host layer Network layer Storage layer 4.4 When designing a DR solution, set RTO to 0 to ensure that services are not interrupted Wrong 5 – Storage System O&M Management 5.1 The management IP address of a storage device is 192.168.5.12. Which of following should be entered in the address box of the browser to log in to the storage device? 192.168.5.12 http://192.168.5.12 https://192.168.5.12 https://192.168.5.12:8088 6.2 Which of the following are common management software? DeviceManager eSight Smartkit eService 6.3 DeviceManager can monitor the performance of controllers, front-end ports, and back-end ports Right 6.4 SmartKit integrates various tools required for deploying, maintaining, and upgrading IT devices, helping service and maintenance engineers perform precise operations on these devices, improving work efficiency Right
6 – Scenario-Based Practice 6.1 Which of the following commands can be used to view license information? License shown Show license Show information Show general 6.2 Which of the following can be exported from DeviceManager? System Log Disk log Configuration info Diagnostic File 6.3 Which of the following statements about LUNs and LUN groups of Huawei OceanStor all-flash storage devices are correct? Support multiple LUNs creation Support thick LUNs When creating a LUN using DeviceManager, you can select the application typer corresponding to the LUN LUN group can contain only one LUN 6.4 Which of following can be controlled using SmartQoS policy? Bandwidth IOPS Delay Capacity
Storage Course HCIA Mock exam Which statements is NOT true about information? Information is the same as data Information is different from data Information is processed data Information is used to eliminate random uncertaintly Which statements are NOT true about RAID write penalty? For RAID 5, if data on any disk in the strip changes, the parity data is reclculated RAID 6 has two parity bits. Therefore, compared with RAID 5, RAID 6 is more affected by write penalty Write peanlty greatly affects the performance of SSDs Compared with RAID 1, RAID 5 has poorer read performance due to write penalty Which of the following statements is true about NFS? The NFS service must be started before the RPC service. Otherwise, NFS cannot register port information with RPC The RPC service manages NFS port allocation in a unified manner RPC provides information sharing during the NFS working process During the NFS working process, requests from the client can skip RPC and be directly sent to the server Which of the following is NOT true about NAS? Offers a uniform way to access files over an network Traffic between the NAS device and the workstation should be separated from traffic from the workstation and the internet NAS storage capacity is dedicated to the NAS device NAS storage capacity can be block based storage Which of the following statements is NOT true about RAID 10 working principles? RAID 10 consists of nested RAID 1 + RAID 0 levels and allows disks to be mirrored (RAID 1) and then striped (RAID 0) RAID 10 group consists of an even number of disks When data is written to the RAID 10 group, data blocks are concurrently written to sub-groups through mirroring RAID 10 can restore data if any two disks are faulty During storage planning and deployment, an enterprise has high requirements on read/write performance, data redundancy, and data recovery capabilities. The enterprise wants to ensure that data can be recovered when a single disk is faulty. In addition, the capacity usage of disks in the RAID group consisting of six disks
must be greater than or equal to 60%. Which RAID levels can NOT be selected to meet the preceding requirements? RAID 1 RAID 5 RAID 6 RAID 50 Which of the following is a type of volatile storage? RAM Hard Disk Magnetic Tape DVD Which of the following is not a layer of SCSI Target Model? Network Layer Port Layer Middle Layer Device Layer Which of the data storage types is NOT classified based on data access frequency? Online storage Nearline storage Offline storage Unified storage Which of the following statements about DAS is NOT correct? Storage device connects to a host using the SCSI-based bus architecture DAS is unfavorable to storage resource sharing The host CPU has a work load when storing data Long-distance transmission is supported between a host and a storage device Which of the following statements is NOT true about eSight? eSight uses a component-based architecture. Users can select desired components based on the site requirements eSight supports unified management for Huawei servers, storage devices, virutalization devices, switches, routers, WLAN devices, and firewalls eSight uses the B/S architecture eSight supports only Huawei devices
Which of the following statements about NDMP protocol is NOT true? It is an open protocol based on enterprise-level data management It is oriented for data backup and recovery It supports CIFS-or NFS-based file backup It does not support backup to the tape library Which of the following statements is NOT true about RAID striping? The striping technology divides continuous data into multiple blocks and saves them to different disks Stripe consists of one or more consecutive sectors in a disk, and multiple stripes from a strip The striping technology evenly distributes I/O loads to multiple physical disks After striping, a RAID group can provide a faster speed than a single disk Compared with traditional RAID, which of the following is NOT a feature of RAID 2.0+? Block virtualization enables data to be automatically and evenly distributed on disks in a storage pool, preventing unbalanced loads Independent global or local hot spare disks must be manually configured If a disk is fault, RAID 2.0+ uses thin reconstruction to further shorten the reconstruction time Many-to-many reconstruction is supported. Reconstructed data is written to multiple disks in parallel A company deploys a new storage device and plans to use NFS for file sharing. Which of the following statements is true about NFS? NFS is supported by Windows and Linux NFS supports data transmission over Fibre Channel networks Transmission distance must not exceed 100 m NFS does not support access control Which statements are NOT true about cables in a storage system? One end of the optical fiber can be connected to a Fibre Channel HBA, and the other end can be connected to a Fibre Channel switch or storage device Serial cables are used to connect expansion ports and connect controller enclosures to disk enclosures Mini SAS HD cables are used to connect PCIe ports on controllers in a controller enclosure to data switches There are mini SAS HD electrical cables and mini SAS HD oprtical cables Which statements are NOT true about the disk usage of a storage system? SSDs belong to the high-performance tier and are used to store frequently accessed data NL-SAS disks belong to the capacity tier and are used to store data that is least frequently accessed
SAS disks belong to the high-performance tier and are used to store frequently accessed data NL-SAS disks belong to the capacity tier and are used to store data that is accessed at a medium frequency A new ThinLUN of 100 GB is created. The option “Initially Allocated Capacity” was set to 50 GB. Which of the following statements are NOT true about this LUN? No more than 50 GB can ever be written to this volume The LUN, like all ThinLUNs, does not occupy any space at creation time The LUN will allocate 50 GB of storage capacity even if the LUN was not formatted The LUN must be fully formatted first and then consumes 100 GB of storage capacity Which of the following statements about LAN-based backup are true? Instruction flows are transmitted over the LAN whereas data flows are not The backup agent affects the performance of application servers Backup data is based on LANs, affecting network performance Backup jobs must be separately maintained, complicating management and maintenance During data center construction, a media company purchased storage devices from multiple vendors. Yhe CTO wants to centrally manage these devices through storage virtualization. Which of the following functions are provided by storage virtualization? Hiding the complexity of physical devices Enabling servers to directly access storage hardware Supporting unified deployment and management Reducing the limitations of physical storage capacity An enterprise establishes active-active data centers in city A and city B. If the active-active arbitration mode of the storage (such as Huawei OceanStor hybrid flash storage) is static priority mode, site A is the static priority site. Which of the following statements are NOT true? If the link between two storage systems is down, both sites A and B continue providing services If site A is fault, site B automatically takes over services If site B is fault, site A automatically takes over services If links between the host and site A and between the host and site B are down, the HyperMetro pair status is normal The official website of an enterprise cannot be accessed. Maintenance personnel find thet two NL-SAS HDDs in the disk array are in the alarm state at the same time, causing a data loss. To avoid such problems, which configurations can be used by the enterprise on the premise that the disk capacity utilization cannot be higher than 70%? RAID 6 group in 2D+2P mode RAID 5 group in 4D+P mode
RAID 6 group in 4D+2P mode RAID 6 group in 6D+2P mode Which of the following statements are NOT true about the structure and functions of the hard disk components? Disk platter is responsible of storing data in binary form The actuator is responsible of moving the Read/Write arm The spindle is responsible for sending commands to the disk head The disk connector is responsible of connection and rotation of the platter When CLI is used to configure Huawei hybrid flash storage, which of the following operations are involved in creating storage space? Create a storage pool Create a host Create a LUN Create a LUN group Which of the following are correct regarding the differences of IP SAN and FC SAN? IP SAN uses iSCSI protocol for data transmission FC SAN uses FC protocol for data transmission IP SAN can connect to FC SAN without any additional protocols Both encapsulates the SCSI command with their underlying protocol before transmission Which of the following statements are true about Huawei OceanStor all-flash storage systems? When creating a LUN, you must plan the owning controller for the LUN to implement load balancing among controllers in the system OceanStor all-flash storage systems support front-end interconnect I/O modules to straightly send host I/Os to the most appropriate controller The caches on all controller nodes form a global cache Data in each LUN is evently distributed across the caches on all nodes Which of these are NOT O&M standard systems? Information technology infrastructure library (ITIL) International Organization for Standardization 2000 (ISO2000) Institute of Electrical and Electronics Engineers (IEEE) Storage Networking Industry Association (SNIA)
Which of the following are limitations of DAS, compared with SAN? Poor scalability Large investment Difficult resource sharing Decentralized management Which of the following statements are NOT true about the extent in RAID 2.0+ technology? An extent can be 128 MB, but a grain is alwais 64 KB An extent can be as small as 512 KB and as large as 128 MB An extent can be as small as 512 KB and as large as 64 MB An extent can be as small as 64 MB and as large as 512 MB An engineer maps the storage system to the file server to store various enterprise files. One day, the file system is attacked by viruses and files cannot be opened. To access the files, theengineer performs a snapshot rollback. Which of hte following statements are true? Snapshot rollback can quickly restore data Some data may be lost during a snapshot rollback If there are writes to the source LUN during a snapshot rollback, the rollback is performed after the writes are complete When no host reads or writes data, the snapshot data is rolled back to the source volume in sequence Which of the following statements about SAS are true? SAS is a point to point protocol SAS and SATA device can’t be connected in the same system Expanders are used to connect to multiple devices SAS is the serial standard of SCSI A bank purchases a new storage device. During the RAID level configuration, the bank requires that data reliability be improved and parity data be stored on different disks. Which RAID levels can NOT meet the requirements? RAID 3 RAID 0 RAID 5 RAID 6 When configuring the initial capacity allocation for a storage system where the storage tiering is enabled, which of the following allocation policies are NOT suggested?
Copy all data to the performance tier and allow the system to migrate the data Copy all the data to the capacity tier and allow the system to migrate the data Enable automatic allocation if there are no statistics regarding I/O monitoring of the data access frequency Enable allocation based on storage tiers if it is known that the data should belong to which storage tier On the IP SAN of an enterprise, the host resource usage is always high. It is found that the initiator software on the host occupies a large number of resources to converti SCSI packets into TCP/IP packets. What are the solutions that can NOT solve the preceding problem? Change the 10GE network to a 25GE network Replace the NIC with a TOE NIC Replace the NIC with an iSCSI HBA Expand the capacity of the storage device Which of the following disk interface technologies does NOT use serial interface technology? ATA SATA SAS SCSI Which of the following components are NOT responsible for rotating the disk platter in the disk drive? Spindle Actuator Control Circuit Board Read/Write Arm A bank enables SmartTier for the bill transaction system. During I/O monitoring, it is found that the written data is frequently accessed. Which configurations help optimize performance? Capacity allocation preferentially from the high-performance tier Migration to the high-performance tie Capacity allocation preferentially from the capacity tier Migration to the low-performance tier Which of the following statements are correct?
RAID group is like a physical volume that consists of multiple disks One logical volume can be created on a physical volume Multiple logical volumes can be created on a physical volume LUN can reside on multiple RAID groups In the storage system of an Internet company, services A and B compete for cache and network resources, prolonging the wait time for other services. To solve this problem, cache partitioning and traffic control need to be configured. Service A is used for processing transactions and requires instant responce. Service B is used for analyzing and querying data. Which of the following configurations are NOT correct? When configuring cache partitions, ensure that the cache of service A is larger than that of service B When configuring cache partitions, ensure that the cache of service B is larger than that of service A Set the QoS priority of service B to be higher than that of service A Set the QoS priority of service A to be higher than that of service B An application server is connected to the LUN in a storage system which contains data with different access frequencies. Complaints about the slow I/O are received from users. After the diagnosis, it is found that the migration policy has not been configured for that LUN. which of the following are NOT the proper methods to solve this issue? Do not configure any nigration policy, because that i twill further slow down the I/O process of the LUN due to migration traffic Configure the migration policy under which the data with less I/O activity can be migrated to the high-performance tier Enable the automatic migration policy for the LUN if there is no special requirement, under which the data can be auto analyzed and migrated accordingly to suitable performance tier Configure the migration process to be done off-peak to prevent further I/O slow down due to data migration during business hours SmartCompression reorganizes data to save storage space and improve the data transfer, and storage efficiency without any data loss True In the Server-Free backup network, the backup data stream is transmitted over a existing LAN network False In NAND flash memory technology, OLC is cheaper than TLC and supports frequent rewriting. Storage class memory (SCM) provides high-speed read/write and is ideal for server memory space False Long periods of service interruption due to the lack of disaster recovery system will can cause financial losses and reputation issues to the business True When RAID 2.0+ is used, a thick LUN consists of extents and a thin LUN consists of grains
True Huawei OceanStor all-flash storage systems use the SmartMatrix architecture, which allows all disks to share all smart qosback-end interfaces modules. Failure of any disk does not affect services False A backup set is a group of data that is backed up in a batch. A backup set can be used for full backup, but can not be used for incremental backup False An enterprise creates three 20 GB thin LUNs for the online transaction system, email system, and backup system in a 60 GB storage resource pool. As the company is in its infancy, there is very little data on the online transaction system and email system. However, the amount of legacy data to be imported to the backup system is about 40 GB, which exceeds the capacity of the corresponding thin LUN. As a result, data fails to be written to the backup system True A snapshot is a copy of the source data at a point in time. Snapshots can be generated quickly and only occupy a small amount of storage space True Storage controllers are only connected to disk enclosures within the fibre channel networks False SAN provides file sharing services through protocols such as NFS and CIFS False XML, HTML, and JSON represent types of structured data False SmartQoS can prioritize critical applications in storage resource allocation by limiting the resources allocated to non-critical applications True An engineer plans to configure RAID 6 for a NAS storage system. 4 disks are sufficient for this configuration True The esternal storage system is directly connected to the host bus, involving the high-speed cache and memory required for CPU computing, and the disk and CD-ROM drive that are directly connected to the computer main board False Disasters can happen anywhere at anytime. Implementation of back-up systems will minimize the impact of sudden unexpected disasters False When 500 bytes of data is written to RAID 5 and the sector size of HDDs in the RAID group is 512 bytes, data verification is not required because the amount of data to be written is small
False Raid 50 writes the data to disks in strips and then creates images for written data False A grain is logical storage space in a chunk group. It is the minimum unit for hotspot data statistics and migration. The size of grains can only be 64 KB False The failure of an HDD is more predictable than that of other disk technologies False Statement 1: Multimode optic cables are usually longer than single mode cables. Statement 2: Sharp cable bends lead to weaker signal at the end of the cable Statement 1 and 2 are both true Statement 1 is true and statement 2 is false Statement 1 is false and statement 2 is true Both statements 1 and 2 are false Match the correct functionalities together: (1) IaaS (2) Hybrid (3) SaaS (a) Combination of public and private (b) Applications are hosted externally (c) Hardware is outsourced 1-a; 2-b; 3-c 1-b; 2-c; 3-a 1-c; 2-a; 3-b 1-b; 2-a; 3-c Which of the following items is NOT mandatory in a FIbre Channel SAN? Storage device Fibre channel switch Fibre channel HBA Windows operating system Application program interface (API) is a set of routines, protocols, and tools for building software applications True Statement 1: a company should know what the Cost of Downtime is to determine the backup strategy. Statement 2: for the business continuity it is not important to determine the RTO. Statement 1 and statement 2 are both true Statement 1 is true; statement 2 is false Statement 1 is false; statement 2 is true
Statement 1 and statement 2 are both false Which of the following methods provides the best RTO? Disk-to-tape Disk-to-disk-to-tape Replication Virtual tape library Depending on the amount of data to be backed up, which of the types are actual backup methods? Real-time backup Full backup Incremental backup Differential backup The recovery point objective (RPO) is used to identify how much time lies between two backups True Select the correct statements that describe Mean Time Between Failure (MTBF). MTBF can accurately pinpoint the time of failures of the hard disks The higher the MTBF, The hard disk will have shorter lifespan expectancy MTBF is used to measure the reliability of hard disks MTBF is the predicted elapsed time between inherent failures of hard disks It is a hard-disk failure that occurs when a read-write head of a hard disk drive comes in contact with its rotating platter, resulting in permanent and usually irreparable damage to the magnetic media on the platter surface. Which of the following fits the above description? Electrical failure Bad platter area Bad sector Head crash Statement 1: An ICT infrastructure should be built with high end equipment and be located in one site. Statement 2: a server Is a rackmounted enterprise version of a desktop computer and typically has more than one hard disk installed Statement 1 and statement 2 are both true Statement 1 is true; statement 2 is false Statement 1 is false; statement 2 is true
Statement 1 and statement 2 are both false Connecting an OceanStor 5300 V3 to three disk enclosures requires … SAS cables 3 6 9 12 Which of the following statements about LAN-based backup is incorrect? Instruction flows are transmitted over the LAN whereas data flows are not The backup agent affects the performance of application servers Backup data is based on LANs, affecting network performance Backup jobs must be separately maintained, complicating management and maintenance Each organization independently determines which data should be stored and for how long False Clustered NAS can provide concurrent multi-node access of data to hosts True Which of the following statements are characteristics of pre-copy technology? Migrates data from a suspected faulty disk to a hot spare disk immediately after the error count of the suspected faulty disk exceeds the preset threshold Reduces the occurrence of reconstruction Improves system reliability Reduces system performance Many companies gather so much data that they cannot extract the right information from the data True Using SmartThin gives extra responsibility for the SAN administrator because there is a risk of overprovisioning storage capacity True If not hot spare disk Is configured, how many faulty disks can a RAID 3 group tolerate at most? 4 1 3 2
Which statements are NOT true about RAID write penalty? For RAID 5, if data on any disk in the strip changes, the parity data is recalculated RAID 6 has two parity bits. Therefore, compared with RAID 5, RAID 6 is more affected by write penalty Write penalty greatly affects the performance of SSDs Compared with RAID 1, RAID 5 has poorer read performance due to write penalty An e-commerce company configures the highest I/O priority for its main online transaction services, and configures medium and low priorities for its instant messaging and archiving services respectively. The I/Os 1-2-3-4-5-6 need to be written at the same time. Of these, 3 and 5 are online transaction services, 2 and 6 are instant messaging services, and 1 and 4 are archiving services. Which I/O write sequences are correct? 1-2-3-4-5-6 3-5-2-6-1-4 3-5-1-4-6-2 3-4-5-6-1-2 Which of the following statements is true about NFS? The NFS service must be started before the RPC service. Otherwise, NFS cannot register port information with RPC The RPC service manages NFS port allocation in a unified manner RPC provides information sharing during the NFS working process During the NFS working process, requests from the client can skip RPC and be directly sent to the server Which of the following is NOT true about NAS? Offers a uniform way to access files over an network Traffic between the NAS device and the workstation should be separated from traffic from the workstation and the internet NAS storage capacity is dedicated to the NAS device NAS storage capacity can be block based storage Which of the following statements is NOT true about RAID 10 working principles? RAID 10 consists of nested RAID1 + RAID0 levels and allows disks to be mirrored (RAID 1) and then striped (RAID 0) RAID 10 group consists of an even number of disks
When data is written to the RAID 10 group, data blocks are concurrently written to sub-groups through mirroring RAID 10 can restore data if any two disks are faulty Which of the following is a type of volatile storage? RAM Hard disk Magnetic tape DVD Which of the following best describes the relationship between the storage and host in SAN? One-to-one One-to-many Many-to-one Many-to-many Which of the data storage types is NOT classified based on data access frequency? Online storage Nearline storage Offline storage Unified storage Which of the following statements is NOT true about thin LUNs? After SmartThin is enabled, the capacity of thin LUNs to be created con be larger than the maximum available physical capacity of a storage pool Thin LUNs cannot be directly converted to thick LUNs SmartThin must be enabled for all LUNs in a storage pool Thin LUNs consume a small amount of storage capacity when being created Which of the following statements about DAS is NOT correct? Storage device connects to a host using the SCSi-based bus architecture DAS is unfavorable to storage resource sharing The host CPU has a work load when storing data Long-distance transmission is supported between a host and a storage device Huawei OceanStor series storage system hardware includes controller enclosures and disk enclosures. Which of the following statements about controller enclosures is NOT true? Controller enclosure does not have disks. Disks are installed in disk enclosures
Controller enclosure consists of controller modules, fan, BBU modules, power modules and/or interfaces modules Controller enclosure is the core of a storage system Controller enclosure processes storage services and manages the disk enclosures connected to it Which of the following statements about NDMP protocol is NOT true? It is an open protocol based on enterprise-level data management It is oriented for data backup and recovery It supports CIFS-or NFS-based file backup It does not support backup to the tape library Which of the following statements is NOT true about RAID striping? The striping technology divides continuous data into multiple blocks and saves them to different disks Stripe consists of one or more consecutive sectors in a disk, and multiple stripes from a strip The striping technology evenly distributes I/O loads to multiple physical disks Afert striping, a RAID group can provide a faster speed than a single disk Which of the following statements about RAID 10 is NOT correct? RAID 10 applies to scenarios with demanding requirements for speed and fault tolerance RAID 10 requires at least four member disks In RAID 10, if two member disks in the RAID 1 group fail, data read proceeds normally Data is mirrored and then striped in RAID 10 Which statements are NOT true about flash chips? In the SLC, one cell can store one bit of data In the MLC, one cell can store two bits of data In the TLC, one cell can store four bits of data In the QLC, one cell can store three bits of data Which statement are NOT true about cables in a storage system? One end of the optical fiber can be connected to a Fibre Channel HBA, and the other end can be connected to a Fibre Channel switch or storage device
Serial cable are used to connect expansion ports and connect controller enclosures to disk enclosures Mini SAS HD cables are used to connect PCle ports on controller enclosure to data switches There are mini SAS HD electrical cables and mini SAS HD optical cables Which of the following statements are true about the CIFS protocol? The CIFS protocol allows a user to read, write, and create files stored in a storage system like on a local computer CIFS uses a B/S architecture. Therefore, an administrator should confirm the browser version before deployment CIFS is also called Server Message Block (SMB). Special attention should be paid to its version: SMB 1.0, SMB 2.0, and SMB 3.0 NTLM and Kerberos authentications are supported Which of the following statements about LAN-based backup are true? Instruction flows are transmitted over the LAN whereas data flows are not The backup agent affects the performance of application servers Backup data is based on LANs, affecting network performance Backup jobs must be separately maintained, complicating management and maintenance Which of the following statements are NOT true about RAID 2.0+? Chuncks belonging to one file will never be written on the same physical disk RAID 2.0+ has a higher RAID overhead than traditional RAID types With RAID 2.0+ it is supported to select no hot spare disks RAID 2.0+ allows for a complete enclosure to fail without causing data loss Huawei OceanStor all-flash storage is used as an example. Which statements are NOT true about indicators? The power button must be separated from the power indicator For the controller enclosure, if the location indicator is steady blue, the enclosure is being located For the controller enclosure, if the alarm indicator is amber, a controller enclosure alarm is triggered For the controller enclosure, if the location indicator is off, the enclosure is not located In the scenario where only 2 disks are in the RAID group, which one of the following does NOT use data striping? RAID 0 RAID 1
RAID 5 RAID 6 Which of the following statements about reconstruction are correct? RAID 0, 1, 5, 6, and 10 support reconstruction Reconstruction requires hot spare disks Reconstruction affects system performance Reconstruction does not interrupt system services Which statement are NOT true about PCle scale-out and IP scale-out? PCle scale-out uses the PCle protocol while IP scale-out uses the IP protocol PCle cale-out integrates PCle channels and the remote direct memory access (RDMA) technology to implement service switching between controllers PCle scale-out supports the Ethernet protocol PCle scale-out supports the Internet wide-area RDMA protocol (iWARP) technology Which of the following are a reasonable application scenario for QoS? To ensure the performance for core applications when resources are insufficient To ensure the performance for high-priority subscribers To improve the network stability and reduce the packet loss To increase the network traffic and avoid the congestion caused by the overconsumption Which of the following are correct regarding the differences of IP SAN and FC SAN? IP SAN uses iSCSI protocol for data transmission FC SAN uses FC protocol for data transmission IP SAN can connect to FC SAN without any additional protocols Both encapsulates the iSCSI command with their underlying protocol before transmission Which of the following statements are true about Huawei OceanStor all-flash storage systems? When creating a LUN, you must plan the owning controller for the LUN to implement load balancing among controllers in the system OceanStor all-flash storage systems support front-end interconnect I/O modules to straightly send host I/Os to the most appropriate controller
The caches on all controller nodes form a global cache Data in each LUN is evenly distributed across the caches on all nodes A company purchases a Huawei storage device (such as Huawei OceanStor hybrid flash storage) that uses SAS disks. In addition to SAS disks, which types of disks are NOT suppoted by the storage device? NL-SAS disk SCSI disk Fiber Channel disk SSD Which of the following statements are NOT true about the extent in RAID 2.0+ technology? An extent can be 128 MB, but a grain is always 64 kB An extent can be as small as 512 kB and as large as 128 MB An extent can be as small as 512 kB and as large as 64 MB An extent can be as small as 64 MB and as large as 512 MB An engineer maps the storage system to the file server to store various enterprise files. One day, the file system is attacked by viruses and files cannot be opened. To access the files, the engineer performs a snapshot rollback. Which of the following statements are true? Snapshot rollback can quickly restore data Some data may be lost during a snapshot rollback If there are writes to the source LUN during a snapshot rollback, the rollback is performed after the writes are complete When no host reads or writes data, the snapshot data is rolled back to the source volume in sequence Which of the following statements about SAS are true? SAS is a point to point protocol SAS and SATA devices can’t be connected in the same system Expanders are used to connect to multiple devices SAS is the serial standard of SCSI When a host reads data from a thin LUN, which of the following technologies are NOT used to read data from the actual storage space of a storage pool? Capacity-on-write Direct-on-time Direct-on-read
Capacity-on-read Which of the following statements are NOT true about the evolution of the storage network architecture? Data needed to be stored as the data volume increased. Therefore, the earliest and simplest storage architecture SAN emerged SAN provides file storage to make file sharing in the DAS architecture more convenient Compared with DAS architecture, NAS architecture provides better file sharing services Distributed storage emerged in the same time period as DAS, providing better scalability for DAS architecture Based on the analysis of disks characteristics and data characteristics regarding storage tiers, which of the following statements are not correct? SSD drives belong in the high-performance tier and store the data with high access frequency NL-SAS drives belong in the capacity tier and store the data with the lowest access frequency SAS drives belong in the high-performance tier and store the data with high access frequency NL-SAS drives belong in the capacity tier and store the data with the medium access frequency Which of the following disk interface technologies does NOT use serial interface technology? ATA SATA SAS SCSI Which of the following statements are NOT true for a NAS solution? Cable length is around 10 m Block size is configurable CIFS and NFS are both commonly used protocols NAS clients are connected to the NAS server using Ethernet switches Which of the following components are NOT responsible for rotating the disk platter in the disk drive? Spindle Actuator Control circuit board Read/write arm
Which of the following statements about RAID 5 are NOT correct? RAID 5 has fixed parity disks RAID 5 uses the XOR algorithm for parity RAID 5 writes data by stripes RAID 5 tolerates the failure of a maximum of two member disks without losing data A bank enables SmartTier for the bill transaction system. During I/O monitoring, it is found that the written data is frequently accessed. Which configurations help optimize performance? Capacity allocation preferentially from the hish-performance tier Migration to the high-performance tier Capacity allocation preferentially from the capacity tier Migration to the low-performance tier Which of the following statements are correct? RAID group is like a physical volume that consists of multiple disks One logical volume can be created on a physical volume Multiple logical volumes can be created on a physical volume LUN can reside on multiple RAID groups A bank purchase 500 servers, chooses the distributed architecture for deployment, uses local disks of the servers to create multiple storage pools, and binds storage resources with the service network. In this way, elastic scaling of storage resources is guaranteed, and resource utilization is improved False SmartCompression reorganizes data to save storage space and improve the data transfer, processing, and storage efficiency ithout any data loss True HyperSnap for FiLe is based on Copy-On-Write False Long periods of service interruption due to the lack of disaster recovery system will can cause financial losses and reputation issues to the business True When RAID 2.0+ is used, a thick LUN consists of extents and a thin LUN consists of grains True Huawei OceanStor all-flash storage systems use the SmartMatrix architecture, which allows all disks to share all front-end and back-end interface modules. Failure of any disk does not effect services False
A backup set is a group of data that is backed up in a batch. A backup set can be used for full backup, but can not be used for incremental backup False An enterprise creates three 20 GB thin LUNs for the online transaction system, email system, and backup system in a 60 GB storage resource pool. As the company is in its infancy, there is very little data on the online transaction system and email system. However, the amount of legacy data to be imported to the backup system is about 40 GB, which exceeds the capacity of the corresponding thin LUN. As a result, data fails to be written to the backup system True A snapshot is a copy of the source data at a point in time. Snapshots can be generated quickly and only occupy a small amount of storage space True Storage controllers are only connected to disk enclosures within the fibre channel networks False SAN provides file sharing services through protocols such as NFS and CIFS False The recovery point objective (RPO) can be regarded as the maximum acceptable amount of data loss measured in time True HyperClone is a value-added feature of Huawei OceanStor all-flash storage for data protection. The target LUN can be read ad written immediately, and you do not need to wait for the copy process to complete True SmatQoS can prioritize critical applications in storage resource allocation by limiting the resources allocated to non-critical applications True An engineer plans to configure RAID 6 for a NAS storage system. 4 disks are sufficient for this configuration true The external storage system is directly connected to the host bus, involving the high-speed cache and memory required for CPU computing, and the disk and CD-ROM drive that are directly connected to the computer main board false Disasters can happen anywhere at anytime. Implementation of back-up systems will minimize the impact of sudden unexpected disasters False
When 500 bytes of data is written to RAID 5 and the sector size of HDDs in the RAID group is 512 bytes, data verification is not required because the amount of data to be written is small False RAID 50 writes the data to disks in strips and then creates images for written data False The failure of an HDD is more predictable than that of other disk technologies False It is the interconnection via the Internet of computing devices embedded in everyday objects, which enables them to send and receive data. Which of the following fits the statement above? Cloud Big data Social media Internet of things Statement 1: everytime a tape is used to restore data, some data will be lost. Statement 2: backup strategies that use tape as backup media typically have a high RTO Statement 1 and 2 are true Statement 1 is true; statement 2 is true Statement 1 is false; statement 2 is true Statement 1 and 2 are false Which of the following are existing Solid State Disk types? DLC eMLC TLC SLC A backup set is a group of data that is backed up in a batch. A backup set can be used for either full backup or incremental backup True Which of the following statements about Disaster Recovery is NOT true? Some data loss must be accepted After a disaster access to the data, on the remote site, can be immediate Applications to work with the recovered data is in place There are still traditional backup strategies in place
In HUAWEI OceanStor V3, for synchronous replication to be successful, all host applications must be pauzed during the replication update process. False Because they are cheap and still have a large capacity we can say that cMLC Solid State Disks are ideal for storing MP3 files and JPGs at home True Which of the following statements about RAID 6 is incorrect? Frequently used RAID 6 technologies include RAID 6 P+Q and RAID 6 DP. RAID 6 requires two-level parity RAID 6 requires at least three member disks. RAID 6 can recover data after two member disks fail. What are the advantages of SSDs over HDDs? Larger capacity Faster read/write speed for random access Better environmental adaptability Longer service life After the UltraPath is installed on an application server, its operating system can automatically identify the disks mapped from a storage device without being restarted False Which of the following is a valid protocol for a UNIX-based NAS server? CIFS NFS SMB Novell Control Protocol Which of the following is NOT a benefit of cloud datacenters? Mainframe servers improve performance Virtualization technology improves resource utilization Distributed computing and storage improve reliability Unified resource management improves efficiency
Which of the following is the correct procedure for configuring a HUAWEI OceanStor V3 storage system? Creating a Storage pool -> Creating a LUN -> Adding a mapping Creating a Storage pool -> Adding a mapping -> Creating a LUN Creating a LUN -> Creating a Storage pool -> Adding a mapping Creating a LUN -> Adding a mapping -> Creating a Storage pool Based on the understanding of the Generation stage of the lifecycle management of information and data, identify the 3 types of sources in which data can be generated External System Generation Internal System Generation External Input Internal Input Which of the following statements about data is incorrect? Data can be input to a computer and processed by a computer program Data can be input to a computer for processing Data refers to numbers, letters, and symbols that have a certain meaning Data is information that has been processed and is logically related Which of the following is the main storage performance monitoring indicator in small I/O scenarios? IOPS Bandwidth Time Capacity Which of the following operation(s) need(s) to be performed by employee A of a Bank during the initial storage maintenance at a datacenter? 1. Check the SmartKit installation 2. Check the eService Installation and configuration 3. Check the alarm policy configuration 1 and 2 2 and 3
1, 2, and 3 3 In Huawei OceanStor Dorado v6 product series, which colour indicators a powered-on location of a disk enclosure? Green White Blue Yellow A disk head moves the track where the target data locates and waits for the data to rotate under the read. Which of the following does the proceeding process indicate? Average seek time Average latency time Average waiting time Average moving time Assume a company requires high-security storage systems at a storage space utilization of over 60%. Which of the following levels is an appropriate choice? RAID 0 RAID 1 RAID 10 RAID 6 Which of the following RAID levels can tolerate the maximum number of failed disks when a RAID group consists of eight 2 TB disks? RAID 3 RAID TP RAID 5 RAID 6 In RAID 2.0+, which of the following is the minimum granularity to allocate storage space in thin LUN mode? Chunk Chunk group Extent Grain
Which of the following RAID technologies delivers the lowest disk utilization when ten 2 TB disks are configured? RAID 0 RAID 1 RAID 3 RAID 5 Compared with the iSCSI protocol, which of the following is not an advantage of the storage FC network? Improved scalability Increased transmission distance High security Lower cost Which of the following are devices connected using FC HBA? Server and server Server and Fibre Channel array Fibre Channel array and IP storage array Server and IP-SAN array iSCSI initiators can be implemented in the following modes: (1) software initiator driver program, (2) TOE card, and (3) iSCSI HBA 3>2>1 2>3>1 3>1>2 3>1=2 Which of the following is an all-in-one edge IT infrastructure solution that is delivered as an integrated cabinet and mainly used in edge branches and vertical industry scenarios? Huawei scale-out storage Huawei edge data storage Huawei all-flash storage Huawei hybrid flash storage
Which of the following algorithms is used when UltraPath selection availability path between the application server and storage system in turn to deliver I/O? Bubble sort algorithm Minimum queue depth algorithm Minimum task algorithm Round robin algorithm Which of the following operations cannot be performed on the license management page od DeviceManager? Import a license Activate a license Update a license Uninstall a license When the number of alarms messages exceeds the system threshold, which of the following can be set to prevent alarm data loss? Dump FTP server Alarm notification System settings Which of the following GUIs provided by Huawei all-flash storage systems for query, configuration, management and maintenance of the storage systems? eSight eService DeviceManager SmartKit Which of the following statements about thin LUNs is correct? The capacity of a thin LUN is the actual physical space Thin LUNs cannot be directly mapped to hosts The capacity of a thin LUN is not the actual physical space The capacity of a thin LUN cannot be greater than the maximum physical space provided by the storage system What is the unit used by a storage pool to identify data activity levels during data migration?
Single file Data block LUN Disk Which of the following is not a characteristic of SmartAcceleration? The performance layer is shared by multiple disk domains The performance layer is distributed by the system to each pool based on the recommended quota by default Tiers and caches are independent of each other Tiers and caches are converged Assume every day a hospital archieves a large number of patient cases and test results. However, its storage resources are limited. Which of the following deduplication modes can ensure these operations without occupying transmission bandwidth? Source deduplication Target deduplication Inline deduplication Post-process deduplication In Huawei all-flash storage, which of the following is the minimum interval for creating HyperCDP objects in a HyperCDP schedule? 3 seconds 5 seconds 2 seconds 1 second Which of the following is the protection object of HyperLock? LUN Host File system Disk An enterprise creates snapshots for service LUNs hourly to ensure security of service data on its storage devices. A new employee mistakenly deletes data generated at 9:30 a.m. To retrieve the deleted service data and minimize service impact. Snapshots generated at which time point should be restored?
9:00 10:00 11:00 12:00 Which of the following statements about snapshots of Huawei storage (such as Huawei OceanStor hybrid flash storage) is false A snapshot can be generated instantly to quickly obtain a consistent copy of an original LUN When a snapshot is not activated, the data I/O write process is the same as that when no snapshot is created After a snapshot is created, space re-allocation is not required for overwriting during the redirect-on-write (ROW) process After a snapshot LUN is mapped to a host, data can be read and written Which of the following objects can be monitored on DeviceManager? Snapshot LUN Controller Disk Logical port Engineer A is responsible for managing the storage devices of a company. Which of the following operations are management? Storage resource allocation User management Device performance monitoring Alarm management During routine maintenance of a storage device, engineer A runs the “change user user_name=newuser level=admin” using the CLI. Which of the following statements about this command are correct? A change operation is performed The operation object is user_name The attribute of the operation object is user The user level is changed to admin What are the types of SSDs?
SLC MLC TLC QLC Which of the following factors affect HDD performance? Rotational speed Seek speed Single platter capacity Port rate Which of the following scale-up networking modules can be used by Huawei SAS disk enclosures? Dual-plane networking Symmetric networking Forward connection networking Backward connection networking Scale-up and scale-out are two storage system capacity expansion methods. Which of the following statements about the two methods are correct? Scale-up mainly improves the performance of a single node Scale-out mainly increases the number of nodes Scale-up is generally used in cloud computing Scale- out increases management complexity Which of the following RAID 50 scenarios may cause data loss? Two disks in the same RAID 5 group fail at the same time Two disks in different RAID 5 groups fail at the same time Three disks in the same RAID 5 group fail Three disks in different RAID 5 groups fail at the same time Which of the following statements about IP SAN and FC SAN are correct? Theoretically, there is no distance limit on IP SAN IP SAN can implement local and remote disaster recovery at a low cost FC SAN technologies and management are relatively complex The hardware and software costs of FC SAN disaster recovery are relatively high Which of the following are included in networking of scale-out storage? Front-end service network
Back-end service network Back-end storage network Management network Which of the following statements about FlashLink are correct? Efficient RAID Hot and cold data separation Low latency Intellingent multi-core technology Huawei all-flash series storage systems employ the FlashLink technology. It is for flash memory to provide high IOPS concurrency and stable low latency. Which of the following are the key technologies of FlashLink? Intelligent multi-core technology Large-block sequential write Hot and cold data separation Smart disk enclosure Global wear levelling and anti-wear levelling Which of the following storage are supported by Huawei scale-out storage products? Block service File service Object service HDFS service Which of the following parameters are entered in the “upadm set loadbalancemode=()” command Huawei UltraPath set load balance mode? Round-robin Min-queue-depth Min-task Split-size Which of the following operations can be performed on the license management page of DeviceManager? Import a license
Activate a license Update a license Uninstall a license Storage management is to query, set, manage, and maintain storage systems using management tools. Which of the following are subject to storage management? Storage resource configuration User management Data protection feature management Device performance monitoring Alarm management SmartThin is a storage resource virtualization technology that enables then provisioning. Compared with conventional storage system deployment, what are the advantages of SmartThin? Unbalanced storage space utilization Much lower initial investment for users Better meets storage resource demands Improved storage space utilization Which of the following are characteristics of snapshots? Backup and archiving Quick restoration Instant generation Cross-device protection Which of the following are included in the snapshot technology of Huawei storage? ROW COW DCL CDP Which of the following statements about the HyperClone synchronization process are correct? After a HyperClone pair is created, initial data synchronization is started. Synchronized data will overwrite data on the target After a HyperClone pair is created, all data will be synchronized in initial synchronization
A snapshot license is required because, during initial synchronization, a snapshot is automatically created Reverse and incremental synchronization are not supported The controller CPU and cache process I/O requests and manage storage system RAID True There are built-in coffer disks and external coffer disks True Disks can be classified into enterprise-grade and desktop-grade disks according to their usage True The optical module must be consistent with on the interface module label. Otherwise, the storage system reports an alarm, and this port is unavailable True Huawei entry-level storage products adopt the dual-controller architecture by default True The scale-up expansion mode can increase the system storage capacity and the number of controllers False Scale-out is a horizontal expansion architecture where controllers are added True A LUN is a storage unit that can be directly mapped to a host for data reads and writes. It is external embodiment of a volume True The SCSI protocol is essentially independent of the underlying transmission media True SAS is the serial standard of the SCSI bus protocol True Huawei NVMe-based all-flash storage arrays deliver the same efficiency as SAS-based all-flash storage arrays in terms of write request processing False If you enter an improperly formatted CLI command, an asterisk (*) is used to help you locate and rectify the error False Assume a SmartTier policy is enabled in a company’s storage system. After monitoring I/Os and other statistics, it is found that most I/O written by a service are active data and frequently accessed. To
improve performance, the company should change the initial capacity allocation policy to allocation preferentially from the capacity tier. False SmartDedupe is a data downsizing technology that deletes redundant data block in a storage system to save physical storage capacity, meeting increasing data storage needs True Assume that: 1. A LUN has data A; 2. A snapshot (Snap1) is created and activated for the LUN 3. A host changes data A in Snap1 to B; 4. After the data change, a snapshot copy (Snap2) is created for Snap1. In this case, when the host accesses Snap2, data B is returned True An employee logs in to the company’s storage device and finds that he has certain control permissions. However, he can neither change the system time nor manage users. Which of the following roles does he have? Super administrator Administrator Common user Read only user In Huawei OceanStor storage systems, when you create a clone, the original LUN can be a thick LUN or a thin LUN, and the secondary LUN can only be a thin LUN True An internal storage system connects to the host bus, and includes the high-speed cache and memory required for CPU computing and the disks and CD-ROM drives that connect to the main boards of computers True In terms of flash medium chip technology, QLC is cheaper than TLC and supports frequent rewriting, while storage class memory (SCM) provides high-speed read/write and is best suited to server memory False Huawei OceanStor all-flash storage systems use the SmartMatrix architecture that allows all controllers to share al front-and back-end interface modules. This ensures failure of any controller will not impact service running True In addition to running lossless semantic and performance features, OceanStor Pacific series provides the Smartindexing feature to implement multi-protocol interworking of file, object, and HDFS services. This allows one copy of data to be accessed through multiple semantics without format conversion
False When 500-byte data is written to RAID 3 and the sector size of each HDD in the RAID group is 512 bytes, data verification is not required because the amount of written data is small False Each CKG is divided into logical storage spaces called extents. Which are the minimum unit for migration and statistics of hot data. One storage pool may have extents of different sizes False In a bank’s check image system, structured data is typically stored on SAN storage arrays, while unstructured data is stored on NAS storage arrays True SmartMigration achieves full replication of source LUN data to the target LUN. After the replication is complete, the target LUN takes over all services from the source LUN True SmartThin pre-allocates all space and presents users with a capacity larger than the logical storage space False Scale-out object storage has a unified namespace and supports online scaling True The recovery point object (RPO) is used to measure the service recovery of a disaster recovery (DR) system True The disadvantage of full backup is that it requires the most recent full backup and current differential backup to fully restore data False In backup networking mode, LAN Free and Server Free have minimal impact on the host performance True Assume a bank purchases 1000 servers to run over a scale-out architecture. Further, the bank uses local disks of the servers to create multiple storage pools, and binds storage resources with the service network. This practice ensures elastic scaling of storage resources and improves resource utilization False During routine maintenance of a storage device, engineer A runs the “change user user_name=newuser level =admin” command on the CLI. Which are true about this command? Change operation is performed The operation object is user_name The attribute of the operation object is user
The user level is changed to admin Which of the following are O&M standard systems? Information technology infrastructure library (ITIL) International organization for standardization 2000(ISO2000) Institute of electrical and electronics engineers(IEEE) Storage networking industry association (SNIA) On the IP SAN of an enterprise, it is found the host resource usage is high. This is due to the initiator software on the host occupies a large number of resources during conversion of ISCSI packets into TCP/IP packets. Which solutions can solve the preceding problem? Change the 10GE network to a 25GE network Replace the NIC with a TOE NIC Replace the NIC with an ISCSI HBA Expand the capacity of the storage device Assume a bank enables SmartTier for the bill transaction system. During VO monitoring is found that the written data is frequently accessed. Which configurations help optimize performance? Capacity allocation preferentially from the high-performance tier Migration so the higher-performance tier Capacity allocation preferentially from the capacity tier Migration to me lower-performance tier Which of the following statements are correct about flash chips? SLC stores one bit of data per cell MLC stores two bits of data per cell TLC stores four bits of data per cell QLC stores three bits of data per cell Which of the following statements about HyperClone are correct? If the source LUN fails, service data can be recovered from a time point before the fault occurred, using the data backed up through HyperClone If a disk failure occurs on the source LUN of HyperClone, you can split the target LUN from the source LUN to continue providing services If a logical fault occurs on the source LUN, data can be reversely synchronized from the target LUN to the source LUN to recover services on the source LUN Multiple target LUNs can be created through HyperClone to provide the service data on the source LUN for multiple applications
Assume an enterprise runs active-active data centers in cities A and B. if the HyperMetro arbitration mode of the storage ( for example, Huawei OceanStor hybrid flash storage) is static priority mode, site A is the static priority site. Which of the following statements are correct? Link faults between the storage systems will not affect services at both sites A and B If site A is faulty, site B automatically takes over the services If site B is faulty, site A automatically takes over its services If the links between the host and site A and between the host and site B are faulty, the status of the HyperMetro par is Normal Data management is the process of using hardware and software technologies to collect, store, process, and utilize data. Which phases are included in data management according to the time sequence? Manual management File system management Traditional database management Big data management Which of the following are subsystems of a storage device? Disk subsystem Control subsystem Connection subsystem Storage management software subsystem Which of the following layer are included in the system architecture of OceanStor pacific block service? Storage driver layer Storage service layer Storage engine layer Storage network layer Which statements are true about PCle scale-out and IP scale-out? PCle scale-out uses the PCle protocol while IP scale-out uses the IP protocol PCle scale-out integrates PCle channels and the remote direct memory access(RDMA) technology to implement service switching between controllers PCle scale-out supports the Ethernet protocol PCle scale-out supports the internet wide-area RDMA protocol (iWARP) technology Assume a company purchased DAS devices to store files and service data at the startup stage. With the increase of service volume and diversity, which problems may occur?
It is difficult to expand capacity of the DAS architecture once data reaches to a certain volume As the number of tie servers that share the DAS storage increases, no more servers can be added Data and materials are scattered on different devices and cannot be managed centrally Scattered data and materials cannot be easily queried across devices A company provides multiple services such as email and web disk services, but due to limited storage space, the company plans to improve the storage space using SmartThin. Which of the following statements about SmartThin are correct? It virtualizes storage resources It implements on demand allocation It doesn’t allocate all space in advance, and presents a virtual storage space larger than the physical storage space LUN whose capacity is greater than the max physical available capacity of the storage pool cannot be created Which of the following operations can be performed on HyperCDP consistency groups? Create Delete Rollback Synchronize Using a Huawei OceanStor all-flash storage device as an example, which statements about logical ports are correct? Logical ports are created based on bond ports, VLAN ports, or Ethernet ports Logical ports are virtual ports that carry host services An IP address is assigned to each logical port for carrying services Different logical ports can have the same IP address Which of the following are advantages of NVMe? Low latency High bandwidth High IOPS Low power consumption Which of the following statements are correct about cabling in a storage system? One end of the optical fiber can connect to a Fibre channel HBA, and the other can connect to a fibre channel switch or storage device
Serial cables are used to connect expansion ports and connect controller enclosures to disk enclosures Mini SAS HD cables are used to connect PCle ports on controllers in a controller enclosure to data switches There are mini SAS HD electrical cables and mini SAS HD optical cables A company purchases a Huawei storage device (such as Huawei OceanStor hybrid flash storage) that uses SAS disks. In addition to SAS disks, which types of disks are supported by the storage device? NL SAS disks SCSI disks Fibre channel disks SSDs A data processing cycle includes three basic steps: input, processing, and output. Which of the following are operations performed in the processing stage? Calculate salaries based on the attendance records of employees Calculate monthly sales summary based on sales records Import calculation data to the database Print pay slips Which of the following are types of data? Text Image Audio Video A data processing cycle includes three basic steps: input, processing, and output. Which operations are not performed in the data processing phase? Calculate salaries based on the attendance records of employees Calculate monthly sales summary based on sales records Import calculation data to the database Print pay slips Which of the following statements is incorrect about Huawei OceanStor all-flash storage systems?
When creating a LUN, you must plan the owning controller for the LUN to implement load balancing across controllers in the system OceanStor all-flash storage systems support front-end interconnect I/O modules to directly send host I/Os to the most appropriate controller The caches on all controller nodes form a global cache Data In each LUN is evenly distributed to the caches on all nodes A hospital needs to archive a large number of patient cases and check results every day, but is hindered by limited storage resources. Which of the following deduplication modes is best suited and doesn’t occupy transmission bandwidth? Source deduplication Target deduplication Online deduplication Post-process deduplication Compared with traditional RAID technologies, which of the following is not a feature of RAID 2.0+? RAID 2.0+ implements block virtualization to enable data to be automatically and evenly distributed onto all disks in a strange pool, preventing unbalanced loads Independent global or local hot spare disks must be manually configured It further shortens the reconstruction time by the means of thin reconstruction in the event of a disk fault It implements many-to-many reconstruction and reconstructed data is written to multiple disks in parallel An engineer maps the storage system to the file server to store various enterprise files. One day the file system is attacked by viruses and files cannot be opened. To access the files, the engineer performs a snapshot-based rollback. Which of the following statements is incorrect? Snapshot based rollback can quickly restore data Snapshot-based rollback may cause data loss During snapshot-based rollback data is written to the source LUN, the data is written to the source LUN first and then rolled back When no host reads or writes data, the snapshot data is rolled back to the source volume in sequence
When designing their data center, a media company purchased multi-vendor storage devices. The CTO wants to centrally manage these devices through storage virtualization. Which of the following is not a function of storage virtualization? Hiding the complexity of physical devices Enabling servers to directly access storage hardware Supporting united deployment and management Reducing the limitations of physical storage capacity Assume a bank acquired a new all-flash storage device, for example, a Huawei OceanStor all-flash storage device. An engineer performed initial configuration on the device. Which operation Is correct? Use port 8088 for DeviceManager login Create a thick LUN Configure RAID 5 policy to ensure the system tolerates failure of two chunks Create 600 hosts in batches Which of the following is not a non-volatile medium? DRAM MRAM NAND flash PCRAM Which of the following is not a Huawei storage solution? Disaster recovery (DR) solution Backup solution Archive solution Replication solution Which of the following access control policies is used by OceanStor Pacific series? ACL PBAC RBAC ABAC Which storage management software can automatically report alarms from connected storage devices to Huawei service support center? Smartkit CLI Devicemanager
eService which of the following storage architectures is not scalable? DAS NAS FC SAN IP SAN In Huawei all-flash storage, which of the following is the minimum interval for creating HyperCDP objects in a HyperCDP schedule? 5 seconds 4 seconds 3 seconds 2 seconds Which of the following protocols cannot be used by DME Storage to connect to customers legacy O&M and cloud management platforms? RESTful SSH SNMP Redfish Which of the following statements about storage network architecture evolution is correct? The earliest and simplest storage architecture SAN emerged, to store data in line with increased volumes SAN provides file storage to make file sharing in the DAS architecture more convenient Compared with the DAS architecture, the NAS architecture provides better file sharing services Scale-out storage emerged at the same time as DAS, to improve scalability for the DAS architecture An employee performs the following operations in the storage system 9:00-created and activated a snapshot for LUN A: 10:00-modifed all data on the snapshot LUN and source LUN; and 11:00-rolled back data using the snapshot. Which of the following statements is incorrect?
Date in the COW space is that of LUN A at 9:00 Data in the COW space is that of LUN A at 10 00 Data of the source LUN is the modified data at 10 00 After the rollback using a snapshot the source LUN data changed to the snapshot LUN data modified at 10.00 Which of the following statements about thin LUNs is incorrect? After SmartThin is enabled, the capacity of the to-be-created thin LUNs can be larger than the max available physical capacity of a storage pool Thin LUNs cannot be directly converted to thick LUNs SmartThin must be enabled for all LUNs in a storage pool Thin LUNs occupy a small amount of storage capacity when being created Which of the following statements about information is incorrect? Information is a data representation of all things Information is different from data Information is processed data Information is used to eliminate random uncertainties Which of the following RAID technologies does not need to calculate parity data during data write? RAID 0 RAID 3 RAID 6 RAID 50 Use Huawei OceanStor scale-out storage as an example. Which of the following statements is incorrect about the storage interface layer of the software architecture? SCSI and ISCSI interface protocols are supported S3 and Swift protocols are supported The HDFS protocol is supported The InfiniBand (IB) protocol is supported Which of the following statements is incorrect about the working principles of RAID 10? RAID 10 consists of nested RAID 1 + RAID 0 levels and allows disks to be mirrored (RAID 1) and then striped (RAID 0)
RAID 10 group consists of an even number of disks When data is written to the RAID 10 group, data blocks are concurrently written to sub-groups by mirroring RAID 10 can restore data from any two faulty disks During routine inspection, an O&M engineer finds that an alarm is generated on a storage device and performs quick maintenance. Which operation is incorrect? Check the indicator status and rectify related faults Check the system performance and handle related exceptions Check the service status and rectity related faults Restart the storage device Which of the following nodes stores HDFS data? NameNode DataNode MetaNode Client Which of the following statements is incorrect about RAID striping? The striping technology segments logically-sequential data into multiple data blocks and stores them on different disks Stripe consists of one or more consecutive sectors in a disk, and multiple stripes form a strip Striping evenly distributes I/O loads across multiple physical disks Striping enables a RAID group to provide a faster speed than a single disk Which of the following is incorrect about scale-out storage? Large-scale horizontal expansion Expansion by adding nodes increasing both computing capability and storage space Not supporting elastic EC for data redundancy protection Storage resource pooling and virtualization A bank purchases 500 servers, chooses the distributed architecture for deployment, uses local disks of the servers to create multiple storage pools, and binds storage resources with the service network. In this way, elastic scaling of storage resources is guaranteed, and resource utilization is improved False Which of the following statements is NOT true about logical ports for Huawei OceanStor all-flash storage devices? Logical ports are created based on bond ports, VLAN ports, or Ethernet ports