Computer Science
Lahore Board 2015
Inter Part-I
Time: 20 Min.
Objective Type
Marks = 17
NOTE: Four possible answers  A , B , C and D to each questions are given. The choice which you think is correct, fill that circle in front of that question with marker or ink pen in the answer-book. Cutting or filling two or more circles will result in zero mark in that question.

• CBT software is used in:

(A) Education                       
(B) Industry
(C) E-Commerce                 
(D) Business

• The length of IP address is:

(A) 8 bits                                        
(B) 16 bits
(C) 32 bits                                      
(D) 64 bits

• Types of application software are:

(A) 5                            
(B) 4
(C) 3                      
(D) 2

• Data that is shown on display unit either in the form of audio and video is called:

(A) Hard copy                    
(B) Soft copy
(C) Share copy                      
(D) Null copy

• Many bank provide the facility of:

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

• Which is the following memory is temporary:

(A) ROM                      
(B) RAM
(C) PROM                       
(D) EPROM

• How many pairs if computers can simultaneously communicate on Ethernet LAN:

(A) 1                               
(B) 2
(C) 3                               
(D) Multiple

• How many types of partitions are:

(A) 2                                       
(B) 4
(C) 6                     
(D) 8

• The example of antivirus is:

(A) MCAfee                                            
(B) Trojan horse
(C) Worm                                                
(D) Logic bomb

• Which layer of OSI model does data compression:

(A) Network                      
(B) Presentation
(C) Data link                  
(D) Pysical

• A virus that replicates itself is called a:

(A) Bug                       
(B) Vaccine
(C) Bomb                    
(D) Worm

• The songs and speeches represent:

(A) Image                 
(B) Text
(C) Numeric               
(D) Audio

• Which register contains he base location of the current program stack:

(A) ES                     
(B) DS
(C) SS                        
(D) CS

• OMR technology used to read the test mark of:

(A) SAT                          
(B) Blaise Pascal
(C) Babbage                     
(D) Sir Rutherford

• Who proposed a design of stored program computer:

(A) VAN Neumann                  
(B) Blaise Pascal
(C) Babbage                           
(D) Sir Rutherford

• Which is storage device:

(A) Floppy                               
(B) CPU
(C) Clock                  
(D) BUS

• Example of numeric data is:

(A) 5.2                            
(B) 6.4
(C) 3456                          
(D) All of these

Computer Science
Lahore Board 2015
Inter Part-II
Time: 3:10
Essay  Type
Marks = 83

SECTION-I

2. Write short   answer any Eight (8) questions:  (16)

• Define application software.
  
• What is bar code reader?
  
• Differentiate between bit and byte.
  
• What is DSL?
  
• What is network interface card?
  
• State the purpose of FTP.
  
• What is Unicode?
  
• Define synchronous data transmission.
  
• What is broad band?
  
• What is privacy issue?
  
• What is logic bomb?
  
• Write the benefits of password.

3. Write short answers to any EIGHT (8) questions:   (16)

• What is control unit?
  
• Define memory address.
  
• Why does DRAM use more power?
  
• What is motherboard?
  
• Define the role of main memory in computer system.
  
• Distinguish between low level and high level languages .
  
• Define DMA.
  
• What is FLAGS register?
  
• What is the purpose of Recycle Bin?
  
• What is my document folder?
  
• Define the term ‘Word Processing’.
  
• What is paragraph formatting?

4. Write shoat answers to any six (6) questions : (12)

• Define E-commerce.
  
• Differentiate between CAD and CAM.
  
• How computer can be used in marketing?
  
• List some benefits of video conferencing.
  
• How computer can be used in airline system?
  
• How can you merge cells?
  
• Define some and average functions.
  
• List name of five search engines.
  
• Name some ISP’S in Pakistan.

SECTION-II       

Note: Attempt any THREE questions.

• What are input devices? Explain any three pointing input devices.
  
• What is network protocol? Discuss different LAN protocols.
  
• What is data transmission mode? Explain different types of data transmission.
  
• Define language processor/translator. Explain different types.
  
• Explain different causes of viruses.

SECTION-III (Practical Part)

Note: Attempt any THREE questions.

• Write a procedure to change the desktop background.
• Write a procedure to insert Word Art in MS-Word.
• Write a procedure for printing document in MS-Word.
• Write a procedure for rotating text in cell.
• Write a procedure to add two numbers in MS-Excel.