( Part-I ) Lahore Board 2012
Computer Science 
Paper I (Objective Type)
Time allowed: 20 Minutes 
Max. Marks: 15
 
Note: Four possible answers A, B, C and D to each question are given. The choice which you think is correct, fill that circle in front of that question with Marker or Pen ink. Cutting or filling two or more circles will result in zero mark in that question. Write the letter A, B, C or D in the column  (write correct option) against each question also. If there is a contradiction in the bubble and hand written answer, bubble option will be considered correct.

Q1

• The output of printer is called:
  

(A) Hard copy
(B) Graphics
(C) Multimedia
(D) Soft copy

• An organized set of related components is called:
  

(A) SDLC
(B) Network
(C) Processing
(D) System

• Each computer on a network is called a:
  

(A) Bus
(B) Terminator
(C) Node
(D) Connection

• A network that transmits data over city wide distances faster than LAN is :
  

(A) WAN
(B) LAN
(C) MAN
(D) NAN

• Which transmission allows data to travel in both directions but only one direction at a time:
  

(A) Simplex
(B) Half Duplex
(C) Full Duplex
(D) Reverse Duple

• Physical path that connects the source and receiver is known as:
  

(A) Communication channel
(B) Decoder
(C) Encoder
(D) Self –Testing

• CBT software is used in:
  

(A) Education
(B) Forecasting
(C) Manufacturing
(D) Electronic Shopping

• A --- is an automatic programmable machine:
  

(A) CAD
(B) CAM
(C) CBT
(D) ROBOT

• CU stands for :
  

(A) Control Unit
(B) Cache Unit
(C) Calculating Unit
(D) Communication unit

• 10. Computer cannot boot if it does not have:
  

(A) Compiler
(B) Linker
(C) Interpreter
(D) Operating system

• Which of the following is not an antivirus program :
  

(A) Redlof 
(B) Norton
(C) Dr. Solomon
(D) McAfee

• Which of  the following contains the administrative tools:
  

(A) Control Panel
(B) Start Button
(C) Internet Explorer
(D) Recycle Bin

• The shape of insertion point symbol is :
  

(A) Arrow
(B) Vertical line
(C) Horizontal line
(D) Large circle

• The vertical dimension of a spreadsheet is called:
  

(A) Field
(B) Record
(C) Row
(D) Column

• Which of the following is a top-level domain:
  

(A) http
(B) .com
(C) HTML
(D) URL

Inter ( Part-I )
Lahore Board 2012
Computer Science 
Paper I (Essay Type)
Time allowed: 2.10 Hours
Max. Marks: 60
Section-I

2. Write short answers to any SIX(6) questions : 12

• Define information.
• Describe microphone.
• Give some examples of operating system.
• What do you mean by LAN?
• What is Ring topology?
• State the purpose of transport layer.
• Explain external modem.
• What is serial data transmission?
• What is communication satellite?
  

3. Write short answers to any SIX (6) questions: 

• What is E-commerce?
• What is Robot?
• Differentiate between compiler and interpreter.
• What is concept of memory address?
• Explain the function of input / output unit.
• Explain cache memory.
• Why ROM is called non-volatile memory?
• Define pirated software.
• Explain activation of computer virus.
  

4. Write short answers to any SIX (6) questions:   12

• What is file management?
• Define multitasking.
• Define title bar.
• What is clipboard?
• What is difference between relative and absolute reference?
• Define functions in spreadsheet.
• How World Wide Web (WWW) works?
  
• What is meant by e-mail attachment?
  
• Define news server.

 (Section-II)

5. What are mark and character recognition devices? Describe any three in detail.  8

6. What is network standard? Discuss different types of network standards.  8

7. What is data transmission mode? Explain its types.  8

8. Define language processor or translators and their use. Explain different types of language processors.   8

9. Describe different security threats to data security. Give solutions to these threats. 8