Computer Architecture MCQ [PDF] Question Bank with Answers

Computer architecture MCQ. COA computer organization Question Bank PDF. Most important processor Questions with answers for all Competitive Exams like GATE, IBPS, SBI (Bank PO & Clerk), SSC, Railway & Interview or viva preparation.

Computer Architecture MCQ

1. Which of the following is true about Computer Architecture?

A. It acts as the interface between hardware and software.

B. Computer Architecture tells us how exactly all the units in the system are arranged and interconnected.

C. Computer Architecture is concerned with the structure and behaviour of a computer system as seen by the user.

D. It involves Physical Components

Ans. a

2. The basic architecture of computer was developed by

a) Charles Babbage

b) Blaise pascal

c) Garden Moore

d) John Von Neumann

Ans. d

3. The ______ is the computational center of the CPU.

a) Registers

b) ALU

c) Flip-Flop

d) Multiplexer

Ans. b

4. Which of the following is not the form of registers?

a) Address registers

b) Accumulators

c) General-purpose registers

d) All are types of registers

Ans. d

5. Computer address bus is

a) Multidirectional

b) Bidirectional

c) Unidirectional

d) None of these

Ans. c

6. Bios programs are embedded on a chip called as

a) Firmware

b) IC

c) Hardware

d) Application Programs

Ans. a

7. The core element of parallel processing is

a) Data sequencing

b) CPU’s

c) Instruction execution

d) Printer

Ans. b

8. In computer subtraction is generally carried out by

a) 9’s complement

b) 10’s complement

c) 1’s complement

d) 2’s complement

Ans. d

9. (2FAOC) 16 is equivalent to

(a) (195 084)10

(b) (001011111010 0000 1100)2

(c) (195 084)10 & (001011111010 0000 1100)2

(d) None of these

Ans. b

10. A computer consists of

a) A central processing unit

b) A memory

c) Input and output unit

d) All of these

Ans. d

11. In architecture of email we can have

a) 4 scenarios

b) 2 scenarios

c) 3 scenarios

d) 6 scenarios

Ans. d

12. Memory unit that communicates directly with the CPU is called the

a) main memory

b) secondary memory

c) auxilary memory

d) register

Ans. D

13. Where does computer add and compare date?

a) Hard disk

b) Floppy disk

c) CPU chip

d) Memory chip

Ans. C

14. Pipeline strategy is called implement

a) instruction execution

b) instruction prefetch

c) instruction decoding

d) instruciton manipulation

Ans. B

15. When machine instrucitons are being executed by a computer the instruction phase followed by the execution phase is referred to as

a) program cycle

b) machine instruction

c) instruction cycle

d) task cycle

Ans. C

16. Which computer memory is used for storing programs and data currently being processed by the CPU?

a) Mass memory

b) Internal memory

c) Non-Volatile memory


Ans. B

17. Following are the names of motherboard except

a) system board

b) main board

c) planner board

d) logic board

d) computer board

Ans. D

18. The central processing unit is an example of

a) peripheral

b) output unit

c) software

d) hardware

Ans. D

19. The type of input include

a) data

b) programs

c) commands

d) user response

d) All of these

Ans. D

20. ____ selects, interprets and executes instructions in a CPU.

a) Control unit

b) ALU

c) Memory

d) Storage

Ans. A

21. CPU retrieves its data and instruction from

a) secondary memory

b) auxiliary memory

c) main memory

d) none of these

Ans. C

22. The word data is derived form

a) Greek

b) English

c) Hindi

d) Latin

Ans. D

23. ____ is the raw facts from which ____ is derived.

a) Data, information

b) Data, output

c) Input, information

d) Output, input

Ans. A

24. ‘Brain’ of the computer is known by

a) Arithmetic and Logical Unit (ALU)

b) Control Unit (CU)

c) Central Processing Unit (CPU)

d) Storage unit (SU)

Ans. C

25. The system unit

a) Coordinates input and output devices

b) is the container that house electronic components

c) is a combination of hardware and software

d) controls and manipulates data

Ans. B

26. ___ is the process of carrying out commands

a) Fetching

b) Storing

c) Decoding

d) Executing

Ans. D

27. Pick the one that is used for logical operations or Comparisons such as less than, equal to or greater than.

a) ALU

b) CU

c) Input unit

d) MU

Ans. A

28. The ____ is responsible for performing calculations and contains decision-making mechanisms.

a) CPU                 

b) MU                  

c) ALU                  

d) CU

Ans. C

29.CPU comprises of control unit, memory unit and ___ units.

a) microprocessor           

b) arithmetic and logical unit

c) ROM                                

d) RAM

Ans. B

30. Which of the following memory chips is programmed during the manufacturing process?

a) RAM

b) ROM



Ans. B

31. Which of the following components is the most essential for the computer system to work?

a) Input system

b) Output system

c) Storage system

d) Monitor

e) CPU

Ans. E

32. A(n) ___ device is any device that provides information, which is sent to the CPU.

a) Input

b) output

c) CPU

d) memory

Ans. A

33. Which of the following controls the machine cycle?

a) control unit

b) memory unit

c) Logical unit

d) Arithmetical unit

Ans. A

34. Which of the following executes the computer commands?

a) Arithmetic unit

b) Logic unit

c) Both ‘1’ and ‘2’

d) Control unit

Ans. C

35. The machine cycle includes

a) fetch

b) decode

c) execute

d) store

e) All of these

Ans. E

36. ALU is

a) Access Logic unit

b) Array logic unit

c) Application logic unit

d) Arithmetic logic unit

Ans. D

37. On the motherboard the connection points for chips are referred to as

a) slots

b) sockets

c) ports

d) lines

Ans. B

38. The load instruction is mostly used to designate a transfer from memory to a processor register known as [IBPS PO 2012]

a) accumulator

b) instruction register

c) program counter

d) memory address register

Ans. A

39. ‘C’ in CPU denotes

a) Common

b) Central

c) Convenient

d) Computer

Ans. B

40. Arithmetic logic unit and control sections have special purpose locations called [SBI Clerk 2012]

a) registers

b) RAM


d) I/O

Ans. A

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