(INTER (PART-I)
D.G Khan BOARD 2017
COMPUTER SCIENCE
(Objective Type)
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.

• Which of the following is an output device?

(A)Scanne
(B) mouse
(C)plotter
(D)light pen

• The name for screen clarity:

(A)pixel
(B)resolution
(C)picture quality
(D)density

• Identify the LAN protocol

(A)Ethernet
(B)TCP/IP
(C)HTTP
(D)FTP

• A combination of client/server n Mixed network Dedicated network is called:

(A)Mixed network
(B)Merged network
(C)Dedicated network
(D)Hybrid network

• ……………….. character are represented by Unicode scheme:

(A)45536
(B)55536
(C)65536
(D)75536

• A telephone conversation is an example of :

(A)full-duplex transmission
(B)half-duplex transmission
(C)Simplex transmission
(D)Duplex transmission

• CAL stands for:

(A)Computer Assisted learning
(B)Computer Aided Learning
(C)Computer Added Learning
(D)computer affected learning

• Which CPU register hold the address of next instruction to be executed:

(A)Instruction register
(B)Memory buffer register
(C)memory address register
(D)program counter register

• The idea of storing a program in memory was given by:

(A)John Von Neuman.
(B)Dr.Abdul Qadir
(C)Dr. Abdul Salam
(D) Pascal

• Memory management is function of :

(A)Application software
(B)Utility program
(C)Device driver
(D)Operating system

• The virus which activated on a specific data and time is called:

(A)Chernobal
(B)Logic bomb
(C)Redlof
(D)Trojan Horse

• Windows explorer is used to:

(A)Access the Internet
(B)Explorer system resources
(C)Perform maintenance task
(D)Navigate file and folder on computer

• Clipboard in MS-Word stores:

(A)Entered text
(B)Copied text
(C)Deleted text
(D)Repeated text

• Which of the following function is used to get current data in MS-Excal:

(A)Month
(B)Year
(C)Today
(D)Exact

• The length of IP Address is:

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

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

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

1. What do you know about pen-based system?
2. Define system development life cycle.
3. Why resolution is important for display screen?
4. What is Client-Server Network Model?
5. Define Network Topology.
6. Enlist different components of LAN.
7. What is meant by full duplex mode of data communication? \
8. Define the term "EBCDIC" data coding scheme.
9. What is meant by Microwave data transmission?

3. Write short answers to any six parts of the following:

1. How many computer can be helpful in weather forecasting?
2. How CAM works?
3. List out the two advantages of E-commerce.
4. What is main memory?
5. Define register.
6. Why we use operating system?
7. What is low level language?
8. Define object code.
9. Write briefly the purpose of copy right Act.

4. Write short answers to any six Darts from the following:

1. Name too options of control panel.
2. Give one difference between graphical user inter-face and command line interface.
3. Write one difference between line spacing and paragraph spacing
4. List two features of Text Editor.
5. Give one difference between Save and Save As options.
6. What is Merge and center option in MS Excel
7. Write to uses of Internet.
8. What is Domain name system?
9. List two function of MS-Excel.

SECTION-II

Attempt any two Questions.

5. Discuss four primary components of computer system.
6. What is star topology? Explain its working with diagram. Discuss its advantages and disadvantages.
7. Define data communication. Explain the four basic communication network.
8. What is operating system? Explain different functions of operating system.
9. Explain different cause of computer virus.