Nokia Data CenterFabric FundamentalsExamVersion: Demo[ Total Questions: 10]Web: www.certsout.comEmail: [email protected]
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Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 1 of 11A. B. C. D. Question #:1Which of the following statements about Nokia’s Fabric Services System is FALSE?Data center fabric configuration is represented as the fabric intent in a declarative YAML format.Digital sandbox provides notification of performance issues in the data center fabric.Telemetry data is provided in a context that is relevant to the fabric intent.Cloud-native design enables easy integration with the customer's environment.Answer: BExplanationComprehensive and Detailed Explanation From Exact Extract:Option A: TRUE – Fabric intent is declaratively defined in YAML.\"FSS uses YAML-based declarative intent to define and manage fabric configurations.\"— Nokia Fabric Services System User Guide, \"Intent-Based Fabric\"Option B: FALSE – The Digital Sandbox is for pre-deployment validation, not performance monitoring.\"The Digital Sandbox simulates configurations for validation before deployment. Performance monitoring is handled by telemetry analytics, not the sandbox.\"— Nokia FSS Deployment Guide, \"Digital Sandbox\"Option C: TRUE – Telemetry is contextualized with intent.\"Telemetry data is correlated with fabric intent, providing context-aware insights.\"— Nokia FSS Operations Guide, \"Telemetry and Analytics\"Option D: TRUE – FSS is cloud-native for flexible integration.\"FSS’s cloud-native microservices architecture simplifies integration with customer ecosystems.\"— Nokia FSS Architecture White Paper, \"Cloud-Native Design\"Conclusion: Option B misrepresents the Digital Sandbox’s purpose.References:Nokia, Fabric Services System User Guide, \"Intent-Based Fabric\".
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 2 of 11A. B. C. D. Nokia, FSS Deployment Guide, \"Digital Sandbox\".Nokia, FSS Operations Guide, \"Telemetry and Analytics\".Nokia, FSS Architecture White Paper, \"Cloud-Native Design\".Question #:2Which of the following is NOT one of the reasons why BGP is used as the routing protocol in the data center?It is more efficient than link-state protocols like IS-IS and OSPF.BGP neighbors automatically discover each other.It is a well understood and mature routing protocol.It supports both IPv4 and IPv6.Answer: BExplanationComprehensive and Detailed Explanation From Exact Extract:BGP is widely adopted in data center fabrics due to its scalability, multiprotocol support, and maturity. However, option B is incorrect because BGP does not automatically discover neighbors. Unlike link-state protocols (e.g., OSPF, IS-IS), which use multicast for neighbor discovery, BGP requires manual configuration of peers via IP addresses. This is explicitly stated in Nokia's documentation:\"BGP requires explicit configuration of neighbors. It does not support automatic neighbor discovery via multicast/broadcast mechanisms.\"— Nokia SR Linux Configuration Guide, Section: \"BGP in Data Center Underlays\"Validation of Other Options:A: Correct. BGP scales more efficiently in large data centers than link-state protocols. Per Nokia:\"BGP’s path-vector design reduces control-plane overhead compared to link-state protocols, making it optimal for large-scale data center underlays.\"— Nokia Data Center Fabric Design GuideC: Correct. BGP’s maturity is a key advantage:\"BGP’s decades of deployment and extensive vendor interoperability make it a reliable choice for fabric underlays.\"— SR Linux EVPN Services Guide
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 3 of 11A. B. C. D. D: Correct. BGP natively supports multi-protocol extensions (MP-BGP) for IPv4/IPv6:\"MP-BGP enables simultaneous transport of IPv4 and IPv6 routes via the same BGP session.\"— SR Linux Routing Protocols HandbookConclusion:Option B is the only choice that misrepresents BGP functionality, as neighbor auto-discovery is not a feature of BGP. This distinction is critical in Nokia SR Linux fabric deployments.References:Nokia, SR Linux Configuration Guide, \"BGP in Data Center Underlays\".Nokia, Data Center Fabric Design Guide, \"Routing Protocol Selection\".Nokia, SR Linux EVPN Services Guide, \"BGP-EVPN Fundamentals\".Nokia, SR Linux Routing Protocols Handbook, \"MP-BGP Implementation\".Question #:3Based on the exhibit output, which of the following statements is TRUE?An ACL filter is configured to accept ICMP packets, which are then processed by the tcpdump-like utility.capture-filter is configured to copy ICMP packets to the CPM where they are processed by the tcpdumplike utility.A cpm-filter policer is configured to rate limit ICMP packets, which are then captured in a log file.A cpm-filter is configured to accept ICMP packets, which are then captured in a log file.Answer: BExplanationComprehensive and Detailed Explanation with Exact Extracts:
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 4 of 11A. B. C. Exhibit Analysis:The output shows real-time ICMP packet captures (echo requests/replies) with detailed metadata (interface, source/destination IP, protocol, size, TTL).The command tools system traffic-monitor protocol icmp confirms this is a tcpdump-like utility (packet capture tool), not a log file.Mechanism for Packet Capture:Capture-filter ACL is required to copy data-plane packets (like ICMP between hosts) to the CPM for analysis by traffic-monitor.Extract from Nokia SR Linux Troubleshooting Guide:\"traffic-monitor is a CPM-based packet capture tool. To capture data-plane traffic (e.g., host-to-host ICMP), a capture-filter ACL must be applied to interfaces to copy packets to the CPM.\"Extract from Nokia SR Linux ACL Configuration Guide:\"Unlike cpm-filter (for control-plane protection), capture-filter ACLs are designed to mirror user traffic to the CPM for debugging via traffic-monitor.\"Why Other Options Are False:A: Generic \"ACL filter\" is ambiguous. Only capture-filter ACLs copy data-plane traffic to the CPM for traffic-monitor.C: cpm-filter policer rate-limits control-plane traffic (e.g., ICMP to the router), not host-to-host ICMP. It does not enable packet capture.D: cpm-filter handles control-plane traffic destined for the router (e.g., ICMP to router IPs), not transit traffic. It does not support traffic-monitor.References:Nokia SR Linux Troubleshooting Guide: Section \"Packet Capture (traffic-monitor)\".Nokia SR Linux ACL Configuration Guide: Sections \"Capture-filter ACLs\", \"CPM-filter ACLs\".Question #:4How does Nokia’s Fabric Services System use a fabric intent to build the DC switch fabric?It uses a YAML file that defines the intended configuration state of the DC fabric.It uses a digital sandbox to connect workloads to the DC fabric.It uses a digital sandbox to build the configuration files for the DC fabric.
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 5 of 11D. A. B. C. D. It uses telemetry data to build the configuration files for the DC fabric.Answer: AExplanationComprehensive and Detailed Explanation:Nokia’s Fabric Services System (FSS) employs an intent-driven approach where the fabric intent is defined in a YAML file. This file specifies the desired state of the data center fabric, including topology, services, and policies. FSS translates this declarative intent into device-specific configurations.Exact Extract:\"Fabric Services System uses intent-based YAML templates to define the fabric’s target state. The system automates configuration generation and deployment, ensuring consistency across the fabric.\": Nokia Fabric Services System Architecture Guide (Section \"Intent-Driven Fabric Automation\").Why other options are incorrect:B/C: The \"digital sandbox\" is used for simulation/testing of workloads, not building configurations.D: Telemetry data is for monitoring/validation, not initial configuration generation.Question #:5Which of the following is NOT one of the user types supported in Nokia SR Linux?SR Linux usersRegular Linux OS usersContainer usersRemote usersAnswer: CExplanationComprehensive and Detailed Explanation with Exact Extracts:Options A, B, and D are supported:SR Linux users (A): Locally configured users for CLI/management access.Regular Linux OS users (B): Native Linux users (e.g., admin) for host OS operations.
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 6 of 11A. B. C. D. Remote users (D): Authenticated via AAA (TACACS+/RADIUS).Extract from Nokia SR Linux System Management Guide:\"User types include SR Linux users (CLI access), Linux OS users (host system), and remote users (external AAA).\"Option C (Container users) is NOT supported:SR Linux does not define \"container users\" as a distinct category. Containers (e.g., management container) share the host's user management.Extract from Nokia SR Linux Security Guide:\"SR Linux does not provision separate user identities for containers. User access is managed at the host OS level or via SR Linux CLI, with no container-specific user type.\"References:Nokia SR Linux System Management Guide: Section \"User Management\".Nokia SR Linux Security Guide: Section \"User Authentication\".Question #:6Which of the following statements about configuration checkpoints in Nokia SR Linux is FALSE?Checkpoint 0 is always the oldest checkpoint.The current running configuration can be saved as a JSON-formatted checkpoint file.The operator can revert to any existing checkpoint.The operator can generate a new checkpoint when committing configuration changes.Answer: AExplanationComprehensive and Detailed Explanation From Exact Extract:Option A: FALSE – Checkpoint 0 is the latest (most recent), not the oldest.\"Checkpoints are numbered sequentially, with 0 representing the most recent checkpoint. Higher numbers indicate older checkpoints.\"— SR Linux Configuration Management Guide, \"Checkpoint Numbering\"Option B: TRUE – Checkpoints are stored as JSON files.
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 7 of 11A. B. C. D. \"Checkpoints capture the running configuration in JSON format for easy parsing and restoration.\"— SR Linux CLI User Guide, \"Checkpoint Operations\"Option C: TRUE – Reversion to any checkpoint is supported.\"Operators can revert to any saved checkpoint, restoring the system to that specific state.\"— SR Linux Configuration Management Guide, \"Checkpoint Revert\"Option D: TRUE – Checkpoints can be auto-generated on commit.\"The system can be configured to create a new checkpoint automatically upon successful commit.\"— SR Linux CLI User Guide, \"Commit Options\"Conclusion: Option A is false because checkpoint 0 is the newest.References:Nokia, SR Linux Configuration Management Guide, \"Checkpoint Numbering\".Nokia, SR Linux CLI User Guide, \"Checkpoint Operations\".Nokia, SR Linux Configuration Management Guide, \"Checkpoint Revert\".Nokia, SR Linux CLI User Guide, \"Commit Options\".Question #:7Which of the following statements about Zero Touch Provisioning (ZTP) is FALSE?The ZTP process downloads a provisioning script defined in the TLS profile.The ZTP process is managed by the ZTP application in Nokia SR Linux.The ZTP process relies on a DHCP server for an IP address.ZTP allows a router to become operational in the network without any pre-provisioning.Answer: AExplanationComprehensive and Detailed Explanation with Exact Extracts:Option A is FALSE: The provisioning script URL is not defined in the TLS profile. It is provided via DHCP (option 239) or DNS.
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 8 of 11A. B. C. D. Extract from Nokia SR Linux ZTP Guide:\"The DHCP server supplies the URL to the provisioning script (via option 239). TLS profiles secure script/image downloads but do not define the script location.\"Options B, C, and D are TRUE:B: ZTP is managed by the ztp application in the management container.C: DHCP provides initial IP/gateway.D: ZTP requires no manual configuration.Extract from Nokia SR Linux Installation Guide:\"The ZTP application automates deployment. It uses DHCP for network parameters and fetches scripts to make the device operational without pre-configuration.\"References:Nokia SR Linux ZTP Guide.Nokia SR Linux Installation Guide: Section \"Zero Touch Provisioning\".Question #:8Which of the following statements about the YANG model used in Nokia’s SR Linux is FALSE?All configuration and state information is defined as a YANG model.The YANG model uses a tree structure with “leafs” as the branches and “containers” as the data components.The YANG model can be converted into other formats such as JSON or XML.The YANG model provides a standardized way for applications to retrieve SR Linux configuration and state information.Answer: BExplanationComprehensive and Detailed Explanation From Exact Extract:Option A is TRUE: SR Linux is fully model-driven.\"Every configuration and state element in SR Linux is defined by a YANG model.\"— SR Linux YANG Data Modeling Guide, \"Introduction\"
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 9 of 11A. B. C. D. Option B is FALSE: Containers are branches (grouping nodes), and leafs are data components (terminal values). The description is reversed.\"YANG structures data hierarchically: containers organize child nodes (branches), while leafs hold actual data values (e.g., integers, strings).\"— SR Linux YANG Data Modeling Guide, \"Tree Structure\"Option C is TRUE: YANG supports JSON/XML encoding.\"YANG models serialize natively to XML or JSON for machine-to-machine communication.\"— SR Linux gNMI and JSON-RPC Guide, \"Data Encoding\"Option D is TRUE: YANG enables standardized access via gNMI/NETCONF.\"YANG provides a consistent schema for applications to retrieve/configurate data via protocols like gNMI.\"— SR Linux Automation Guide, \"Model-Driven Interfaces\"References:Nokia, SR Linux YANG Data Modeling Guide, \"Introduction\".Nokia, SR Linux YANG Data Modeling Guide, \"Tree Structure\".Nokia, SR Linux gNMI and JSON-RPC Guide, \"Data Encoding\".Nokia, SR Linux Automation Guide, \"Model-Driven Interfaces\".components.Question #:9Which of the following statements about multi-homing in EVPN is FALSE?Type 1 Ethernet Auto-Discovery (A-D) EVPN route is used to support EVPN multi-homing.Type 4 Ethernet Segment (ES) EVPN route is used for designated forwarder (DF) election for an ES.The ES identifier (ESI) uniquely identifies an ES and it is locally significant for a particular leaf.The Ethernet Segment (ES) identifies a set of links that connects a host to one or more leafs.Answer: CExplanationComprehensive and Detailed Explanation with Exact Extracts:
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 10 of 11A. B. C. D. Option A (TRUE): Type 1 routes enable multi-homing functions.Extract from Nokia EVPN Multi-Homing Guide:\"Type 1 Ethernet A-D routes signal reachability for an Ethernet Segment (ES) and enable fast convergence/aliasing in multi-homing.\"Option B (TRUE): Type 4 routes facilitate DF election.Extract from Nokia EVPN Fundamentals Guide:\"Type 4 Ethernet Segment routes advertise ESI and VTEP IP to peers for Designated Forwarder (DF) election, which prevents BUM traffic loops.\"Option C (FALSE): The ESI is globally unique, not locally significant.Extract from Nokia SR Linux Configuration Guide (Section: EVPN ESI):\"The ESI must be unique network-wide and consistently configured on all leafs attached to the same multihomed device. It is not locally significant.\"Option D (TRUE): An ES defines the host connectivity model.Extract from Nokia EVPN Multi-Homing Guide:\"An Ethernet Segment (ES) is a set of links connecting a single host (e.g., server) to one or more leafs for redundancy/load balancing.\"References:Nokia EVPN Multi-Homing Guide.Nokia EVPN Fundamentals Guide.Nokia SR Linux Configuration Guide: Section \"EVPN ESI\".Question #:10Which of the following is NOT a function of Nokia’s SR Linux application manager?It monitors the health of all applications.It manages the SR Linux and customer-defined applications.It reads the application’s configuration information and starts each application.It translates the application’s YANG model into protobufs for the IDB.Answer: D
Certs Exam Nokia - 4A0-D01Pass with Valid Exam Questions Pool 11 of 11ExplanationComprehensive and Detailed Explanation From Exact Extract:The SR Linux Application Manager (app_mgr):Option A is TRUE: Monitors application health and restarts failed processes.\"The Application Manager monitors the status of all running applications and triggers recovery actions if failures occur.\"— SR Linux System Management Guide, \"Application Manager\"Option B is TRUE: Manages both Nokia-provided and user-added containerized applications.\"app_mgr manages the lifecycle of all applications, whether preinstalled by Nokia or custom-developed by users.\"— SR Linux DevOps Guide, \"Custom Application Deployment\"Option C is TRUE: Parses application manifests and launches applications.\"The Application Manager reads manifest files (including configuration) and starts applications accordingly.\"— SR Linux Configuration Fundamentals, \"Application Initialization\"Option D is FALSE: Translation of YANG to protobuf is handled by the Management Server (mgmt_server), not app_mgr.\"The Management Server (mgmt_server) compiles YANG models into protobuf schemas for the Interface Database (IDB). The Application Manager does not handle model translation.\"— SR Linux Architecture White Paper, \"Data Modeling Components\"References:Nokia, SR Linux System Management Guide, \"Application Manager\".Nokia, SR Linux DevOps Guide, \"Custom Application Deployment\".Nokia, SR Linux Configuration Fundamentals, \"Application Initialization\".Nokia, SR Linux Architecture White Paper, \"Data Modeling Components\".
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