Computer Organization MCQ [PDF] Question Bank with Answers

Computer Organization MCQ. Important Questions and answers with pdf for all competitive exams. Helpful for GATE, UPSC, SSC, Railway, IBPS, SBI, RBI, Bank PO/MT, RRBs, Specialist & IT Officers, MBA, MCA, BBA, BCA, BBS, Hotel Management etc.

Computer Organization MCQ

1. The ____ performs simple mathematics for the CPU.

(a) ALU

(b) DIMM

(c) BUS

(d) Register

(e) None of these

Ans. a

2. The ALU performs ____ operation.


(b) Logarithm

(c) Algorithm

(d) Arithmetic

(e) None of these

Ans. d

3. ALU stands for

(a) Algorithm and logarithm unit

(b) Arithmetic and logarithm unit

(c) Arithmetic and logical unit

(d) Algorithm and logical unit

(e) None of these

Ans. c

4. Which of the following is responsible for all types of calculations?

(a) ALU

(b) Control Unit

(c) Registers

(d) BUS

(e) None of these

Ans. a

5. The first computer architecture was introduced in [Allahabad Bank Clerk 2010]

(a) 1970

(b) 1968

(c) 1971

(d) 1973

(e) 1972

Ans. a

6. Another word for the CPU is [Allahabad Bank Clerk 2010]

(a) microprocessor

(b) execute

(c) microchip

(d) decode

(e) None of these

Ans. a

7. The microprocessor of a computer [IBPS Clerk 2011]

(a) does not understand machine language

(b) understands machine language and high level language

(c) understands only machine language

(d) understands only high level languages

(e) understands only assembly language

Ans. c

8. The microprocessor is the brain of the computer and is also called a [Allahabad Bank PO 2011]

(a) microchip

(b) macrochip

(c) macroprocessor

(d) calculator

(e) None of these

Ans. a

9. A microprocessor with 12 address lines is capable of addressing [LIC Assistant Officer 2009]

(a) 1024 location

(c) 4096 location

(b) 2048 location

(d) 64 location

Ans. c

10. The first microprocessor produced by Intel Corp and Texas instruments were used primarily to control

(a) calculators

(b) cars

(c) remotes

(d) robotics

(e) grinders

Ans. a

 11. PCs are considered fourth-generation and contain [SBI PO 2014]

(a) information

(b) data

(c) vacuum tubes

(d) microprocessors

(e) transistors

Ans. d

12. Which of the following is a small microprocessor-based computer designed to be used by one person at a time. [SBI Clerk 2014]

(a) netbook

(b) super computer

(c) all-in-one

(d) notebook

(e) personal computer

Ans. e

13. The CPU, also called the ____ when talking about PCs does the vast majority of the processing for a computer [Corporation Bank PO 2011]

(a) Macroprocessor

(b) RAM

(c) Memory System

(d) Microprocessor

(e) None of the above

Ans. d

14. Speed of processor is measured in ____.

(a) bit

(b) byte

(c) pathom

(d) hertz

(e) procetz

Ans. d

15. ____ is defined as the science of selecting and interconnecting hardware components to create computers that meets functional, performance and cost goals. [Allahabad Bank Clerk 2008]

(a) Computer

(b) Calculator

(c) Calculating machine

(d) Computer architecture

(e) None of these

Ans. d

16. The main component(s) of a computer system is/are :

(a) Input devices

(b) Output devices

(c) Central Processing Unit (CPU)  

(d) All of the above

Ans. d

17. Which of the following(s) is/are the basic function(s) performed by computer?

(a) data control

(b) data storage

(c) data processing

(d) data movement

(e) All of these

Ans. e

18. Computers that control processes and accept data in a continuous [IBPS PO 2012]

(a) data traffic pattern

(b) data highway

(c) infinite loop

(d) feedback loop

(e) None of these

Ans. d

19. The system unit of a personal computer typically contains all of the following except ____.

(a) microprocessor

(b) modem

(c) motherboard

(d) monitor

(e) RAM

Ans. b

20. The main job of a CPU is to [Allahabad Bank PO 2011]

(a) carry out program instructions

(b) store data/information for further use

(c) process data and information

(d) Both (a) and (c)

(e) None of the above

Ans. d

21. ‘C’ in CPU denotes [SBI PO 2013]

(a) Central

(b) Common

(c) Convenient

(d) Computer

(e) None of these

Ans. a

22. The CPU comprises of Control unit, Memory and ____ unit. [SBI PO 2013]

(a) Microprocessor

(b) Arithmetic/Logic

(c) Input

(d) Output

(e) None of the above

Ans. b

23. A CPU can directly understand ____ language.

(a) Machine


(c) C++

(d) Java

(e) HTML

Ans. a

24. The microprocessor is made up of millions of

(a) microchips

(b) registers

(c) transistors

(d) All of these

(e) None of these

Ans. c

25. ____ invented the microprocessor.

(a) Jonathn Smith

(b) Marcian E Hoff

(c) Herman H Goldstein

(d) Joseph Jacquard

(e) MyzoMayek

Ans. b

26. A computer cannot perform which of the following functions? [SBI Clerk 2012]

(a) Addition

(b) Subtraction

(c) Bake a cake

(d) Division

Ans. c

27. Which are used to overcome the difference in data transfer speeds of various devices?

(a) Buffer registers

(b) Speed enhancing circuitry

(c) Bridge circuits

(d) Multiple buses

(e) None of the above

Ans. a

28. The hardware in which data may be stored for a computer system is called [IBPS PO 2012]

(a) registers

(b) bus

(c) control unit

(d) memory (e) chip

Ans. d

29. Which of the following is the main circuit board of the system unit?

(a) graphics board

(b) motherboard

(c) sound board

(d) control unit

Ans. b

30. Motherboard is also known as

(a) Electronic Board (EB)

(b) Simulating Board (SB)

(c) Printed Circuit Board (PCB)

(d) Combined Device Board (CDB)

(e) Controller Board (CB)

Ans. c

31. The CPU and memory are located on the ____.

(a) motherboard

(b) sound board

(c) keyboard

(d) graphics board

(e) DOS board

Ans. a

32. ____ registers holds the information before it goes to the decoder.

(a) Control register

(b) Bus register

(c) Data register

(d) Address register

(e) None of these

Ans. c

33. Computer system is controlled by its ____.

(a) CPU

(b) RAM

(c) ROM

(d) DVD

(e) CD

Ans. a

34. Data processing cycle contains [BOB PO 2009, UCO Bank PO 2011]

(a) input cycle and output cycle

(b) input cycle, output cycle and processing cycle

(c) output cycle and processing cycle

(d) data mining and refining cycle

(e) None of the above

Ans. b

35. In CPU processing power is measured in [IBPS Clerk 2012]

(a) GIPS

(b) LIPS

(c) MIPS

(d) Nano seconds

(e) None of these

Ans. c

36. The CPU speed of a mini computer is approximately ____ kilo instructions per second (KIPS).

(a) 500

(b) 550

(c) 600

(d) 1250

(e) 1380

Ans. a

37. From which of the followings the performance of CPU can be measured?

(a) Clock Speed

(b) IPC

(c) DPI

(d) Access Time

(e) Video resolution

Ans. a

38. Transformation of input into output is performed by [SBI Associates Clerk 2008]

(a) peripherals

(b) memory

(c) storage

(d) input-output unit

(e) CPU

Ans. e

39. The clock rate of a processor is measured in [SBI PO 2011; Allahabad Bank Clerk 2010]

(a) Milliseconds

(b) Microhertz

(c) Megabytes or Gigabytes

(d) Nanoseconds

(e) Megahertz or Gigahertz

Ans. e

40. The ____ register holds machine instructions.

(a) Instruction

(b) Input

(c) BUS

(d) DOS

Ans. a

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