Let's Log In Computer Science Book 8 Revised (2078).indd

Vedanta Let’s Log in Computer Science | Book 8

Abbreviation

i. IPO : Input Process Output

ii. IBM : International Business Machine

iii. ASCC : Automatic Sequence Controlled Calculator

iv. ABC : Atanasoff Berry Computer

v. ENIAC : Electronic Numerical Integrator and Calculator

vi. EDVAC : Electronic Discrete Variable Automatic Computer

vii. EDSAC : Electronic Delay Storage Automatic Computer

viii. UNIVAC : Universal Automatic Computer

ix. CPU : Central Processing Unit

x. IC : Integrated Circuits

xi. VLSI : Very Large Scale Integrated

xii. VLSIC : Very Large Scale Integration Circuit

xiii. ULSI : Ultra Large Scale Integration

xiv. AI : Artificial Intelligence

xv. Wi-Fi : Wireless Fidelity

xvi. ECG : Electrocardiogram

xvii. HP : Hewlett Packard

xviii. www : World Wide Web

xix. PC : Personal Computer

xx. OS : Operating System

xxi VMS : Virtual Memory System

xxii. MS-DOS : Micro Soft Disk Operating System

xxiii. NOS : Network Operating System

xxiv. CUI : Character User Interface

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Vedanta Let’s Log in Computer Science | Book 8

xxv. GUI : Graphical User Interface
xxvi. OSS : Open Source Software
xxvii. QBASIC : Quick Beginners All purpose Symbolic Instruction Code
xxviii. ICT : Information Communication Technology
xxix. SMS : Short Message Service
xxx. MMS : Multimedia Message Service
xxxi. CD : Compact Disc
xxxii. DVD : Digital Video Disc
xxxiii. UPS : Uninterruptible Power Supply
xxxiv. NIC : Network Interface Card
xxxv. LAN : Local Area Network
xxxvi. MAN : Metropolitan Area Network
xxxvii. WAN : Wide Area Network
xxxviii. UTP : Unshielded Twisted Pair
xxxix. STP : Shielded Twisted Pair
xl. RJ-45 : Registered jack-45
xli. BNC : Bayonet Neill-Concelman
xlii. MODEM : Modulator-Demodulator
xliii. DSL : Digital Subscriber Line
xliv. ADSL : Asymmetric Digital Subscriber Line
xlv. WLAN : Wireless Local Area Network
xlvi. HTTP : Hypertext Transfer Protocol
xlvii. FTP : File Transfer Protocol
xlviii. ISP : Internet Service Provider
xlix. IP : Internet Protocol
l. FLAC : Free Lossless Audio Codec
li. JPEG : Joint Photographic Experts Group

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Vedanta Let’s Log in Computer Science | Book 8

Model Question
Grade VIII

Subject: Computer Science

Full Marks: 50

Group A - Computer Fundamental [25 Marks]

1. Answer the following questions: [2×5=10]
a) What is computer software?
b) What is cyber law?
c) List any two symptoms of computer virus.
d) Write any two advantage of computer network.
e) Write any two importance of multimedia in education.

2. Choose the best answer: [2]

a) ................... is a type of software that manages and controls the overall
operation of computer.

i) Word Processing ii) Operating system iii) Excel iv) Virus

b) ................... should be used to avoid accessing by unauthorized users.

i) Password ii) UPS iii) Antivirus iv) None of these

c) The computer which contains ........................ is called microprocessor.

i) biochip ii) microprocessor iii) vacuum tube iv) All of this

d) When a computer is turned off, the contents of RAM get ........................ .

i) saved ii) printed iii) erased iv) both (i) and (ii)

3. State true or false. [2]

a) Charles Babbage is considered the father of computer science.
b) MS Word is a word processing software.
c) ICT is not used in e-banking.
d) A hub provides physical connection between all computers.

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Vedanta Let’s Log in Computer Science | Book 8

4. Write appropriate technical term for the following: [2]

a) The calculating device developed by William Oughtred.

b) Selling of goods and services online.

c) The artificial environment created by the computer to entertain user.

d) A main computer in the computer network.

5. Match the following: [2]
Group A
Group B
a) Making Correction Electronic Spreadsheet
b) To add cells Document Security
c) EXCEL SUM ( )
d) Password Editing
Formatting

6. Write the full forms of the following: [3]
a) HTML b) UPS c) WAN d) CPU
e) ALU f) ABC

7. Convert the following numbers as indicated: [2]
[2]
a) (1011) into Decimal b) (125) into Binary
2 10

8. Perform the following binary operations:

a) (1001) + (1011) b) (1100) × (11)
22 22

(Group 'B' HTML - 10 Marks)

9. Answer the following questions: [4]
a) What is HTML? Who invented ? [3]
b) Define web browser with any two examples.

10. Select the correct answer:
a) .................... tag is used to make a text bold.

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Vedanta Let’s Log in Computer Science | Book 8

i) <OL> ii) <B> iii) <DL> iv) None of these

b) Which format of image files can be inserted in HTML?

i) .DOC ii) .GIF iii) .PSD iv) All of these

c) .................... tag is used to break the line.

i) <OL> ii) <BR> iii) <BL> iv) None of these

d) .................... is a software that is used to see the information in the web.

i) Browser ii) Tag iii) MS Word iv) All of these

e) The extension of HTML document is .................... .

i) .html ii) .doc iii) .exe iv) .ppt

f) Which attribute can be used with BODY tag to set background color green?

i) <background=”green”> ii) <bgcolor=”green”>

iii) <vlink=”green”> iv) None of these

11. Write the HTML tag for the following: [3]
a) School Name [use Heading tag]
b) Insert horizontal line
c) Insert image of your school
d) Scroll your name
e) Link your page with http://deokathmandu.gov.np
f) Write H 0 [use subscript tag]

2

(Group 'C' QBasic - 15 Marks)

12. Answer the following questions: [3]
a) What is variable?
b) Define flowchart.

13. Identify the error in the following program and correct it. [2]
REM To Accept two numbers and find their sum

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Vedanta Let’s Log in Computer Science | Book 8

CLI
PRINT “Enter 1st number”; num1
INPUT “Enter 2nd number”; num2
PRINT SUM = num1 + num2
PRINT “Sum”
END

14. Find the output of the following program: [2]
CLS
LET R = 10
LET AREA = 3.14 * R ^ 2
PRINT “The area of circle is:”; AREA
END

15. Read the following program and answer the following questions: [2]
CLS
LET L = 10
LET B = 6
LET H = 2
LET Volume = L*B*H
PRINT “Volume=”;Volume
END
a) Write the variables used in the above program.
b) What is the output of the above program?

16. Write QBasic program for the following: [2×3=6]

a) To accept three different numbers and print the average of numbers.

b) To find the area of rectangle. [A = L × B]

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