LAHORE BOARD 2017
COMPUTER SCIENCE
(Objective Type)
INTER (PART-I)
Time Allowed: 20 Minutes
Maximum Marks: 15
Paper I
Group-I
Note: You have four choices for each objective type question as A, B, C and D. The choice which you think is correct; fill that circle in front of that question number with marker or pen. Cutting or filling two or more circles will result in zero mark in that questions.

• Amplitude is the characteristic of :

(A)Digital signal
(B) Analog signal
(C) Transmission Parallel signal
(D) Serial

• CPU is also called

(A) ALU
(B) CU
(C) Processor
(D) Bus

• Format C is an example of:

(A) Anti-virus
(B) Logic bomb
(C) Trojan horse
(D) Red loaf

• PTCL is a:

(A) Internet
(B) ISP
(C) Web browser
(D) Search engine

• The deleted files are stored in:

(A) My documents
(B) Internet explorer
(C) Windows explorer
(D) Recycle bin

• 3 bytes is equal to:

(A) 16 bits
(B) 20 bits
(C) 24 bits
(D) 30 bits

• in peer to peer network modal:

(A) No hybrid computer
(B) No dint computer
(C) No server computer
(D) No tree topology

• The device that receives data:

(A) Source
(B) Sink
(C) Transmitter
(D) Encoder

• Extra segment register deals with:

(A) Stacks data
(B) I/O units
(C) Mathematical data
(D) Variables

• In MS-Word Scroll bar are of:

(A) 1-type
(B) 2-types
(C) 3- types
(D) 4-types

• A program that detects the viruses, called:

(A) Virus
(B) Groupware
(C) Anti-virus
(D) Shareware

• Plotters are of:

(A) Two types
(B) Three types
(C) Four types
(D) Five types

• In MS-Excel, which is the correct cell address:

(A) AA
(B) 25
(C) 3B
(D) C5

• All physical media deals within:

(A) Application layer
(B) Transport layer
(C) Presentation layer
(D) Physical layer

• SPARCO department gives information about:

(A) Robot
(B) Airline
(C) Chatting
(D) Weather

LAHORE BOARD 2017
COMPUTER SCIENCE
(INTER (PART-I)
(Subjective Type)
Time Allowed: 2:10 Hours
Maximum Marks: 60
SECTION-I
Group-I
Paper I

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

1. Defuse the term digital convergence.
2. How does trackball work?
3. Why is it important to test a system before use?
4. What is groupware?
5. Give one difference between intranet and extranet.
6. Write two functions of Network Layer.
7. List two features of modem.
8. What is broadband?
9. Give two examples of analog data.

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

1. How computers can be used in departmental stores?
2. What is computer simulation?
3. Define the term video conferencing.
4. Define cache memory.
5. State the purpose of Input/output instruction.
6. What is stack register?
7. List two segment registers.
8. What arc interrupts?
9. Describe privacy issue.

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

1. Write two events of keyboard.
2. Explain concept of multitasking in operating system.
3. Define insertion point. In MS-Word.
4. List any two features of text editor.
5. State the use of page setup dialog.
6. Distinguish between formulas and functions.
7. What is relative address in MS-Excel?
8. What do you know about newsgroup?
9. State any two negative impacts of Internet on society.

SECTION-II

Note: Attempt any THREE questions.
5. What is software? Describe different categories/types of software.
6. What is bus topology? Explain its working with diagram. Discuss its advantages and disadvantages.
7. What is data transmission mode? Explain its types with examples.
8. Define language translator. Discuss different types of language translators.
9. Explain any four types of computer viruses.