Computer Science Class-IX 9th Chapter 02

Computer science class ix notes  9th class board pattern model paper
Computer science Chapter No-02 Important questions, if you attempt these question you will get InshaAllah 100% marks.

(Chapter-02) Important MCQs
Q.1: Choose the correct option:

1. All devices of the system are connected by a communication channel called:
A. Signals
B. Pulse
C. Bus
D. None of them
2. A socket that is responsible to enable an external device with the computer system:
A. Port
B. Bus
C. Control Unit
D. None of them
3. The bus with 32 lines can carry……………bytes of data at a time:
A. 2 bytes
B. 4 bytes
C. 6 bytes
D. None of them
4. The processor has internal storage for processing information is called:
A. Cache
B. Registers
C. Channels
D. None of them
5. A parallel port of 25 pins Comprises:
A. 17 signaling
     8 Grounds
B. 20 signaling
     5 Grounds
C. 10 signaling
     15 Grounds           
D. None of them
6. System software are responsible for:
A. Controlling
B. Managing
C. Both A & B
D. None of them
7. ……………….are use regulate and control the speed of all operation inside the control unit:
A. Signals
B. Clocks Pulses
C. Control Bus
D. None of them
8. Which is not the type of system bus?
A. Power Bus
B. Data Bus
C. Address Bus
D. Control Bus
9. Which Operation can not be performed by ALU:
A. Addition & Subtraction
B. Multiplication &      Division
C. Comparisons
D. None of them
10. Which of the following is not the part of the computer system?
A. RAM
B. Hard Disk
C. Monitor
D. None of them
11. A set of instructions given to computer to solve a problems is:
A. Software
B. Hardware
C. Malware
D. None of them
12. Which is not the presentation form of data by output unit?
A. Screen display
B. Printed copy
C. Voice via speakers
D. None of them
13. Which is not the function of a computer?
A. Accepting instruction
B. Processing data
C. Controlling operations
 D. None of them
14. The physical parts of the computer system are called:
A. Software
B. Hardware
C. Shareware
D. None of them
15. Which is not the application software?
A. Network manager
B. Spread sheets
C. Data buses
D. None of them


(Chapter-02) Important Short Questions 


Q.2: Answer the following short questions: (Any Ten)

  1. Define EDP?
  2. What is the dependency of a bus capacity?
  3. Write the name of three units of the computer system?
  4. What is the difference between Hardware & Software?
  5. What are Registers?
  6. What is the difference between serial port & parallel port?
  7. How does the CU control the speed of operations?
  8. What is RAM?
  9. What is the difference between data bus & Address Bus?
  10. Define USB?
  11. What is the motherboard?
  12. What is the difference between input unit & output unit?
  (Chapter-02) Important Long Questions

Q.3 Explain in detail the following.
    
(a)    The role of CPU.

b. Computer Storage