Processor and Memory - Multiple Choice Questions

Processor and Memory Multiple Choice Questions

 1. Brain of computer is  ____________. 

A. Control unit 

B. Arithmetic and Logic unit 

C. Central Processing Unit 

D. Memory 

Answer = Central Processing Unit

2. Control Unit acts as the central nervous system of the computer. 

A. True 

B. False 

C. Nothing Can be said 

D. None of the mentioned 

Answer = True

3. What does MBR stand for.

A. Main Buffer Register 

B. Memory Buffer Routine 

C. Main Buffer Routine 

D. Memory Buffer Register 

Answer = Memory Buffer Register

4.  In the instruction ADD A, B, the answer gets stored in   ___________. 

A. B. 

B. A. 

C. Buffer 

D. C. 

Answer = A

5. What does PC stand for.

A. Program Changer 

B. Program Counter 

C. Performance Counter 

D. Performance Changer 

Answer = Program Counter

6. Which of the following holds the last instruction fetched.

A. PC. 

B. MAR. 

C. MBR. 

D. IR. 

Answer = IR

7. The portion of the processor which contains the hardware required to fetch the operations is _______. 

A. Datapath 

B. Processor 

C. Control 

D. Output unit 

Answer = Datapath

8. Causing the CPU to step through a series of micro operations is called _________. 

A. Execution 

B. Runtime 

C. Sequencing 

D. Pipelining 

Answer = Sequencing

9. The functions of execution and sequencing are performed by using  ______________. 

A. Input Signals 

B. Output Signals 

C. Control Signals 

D. CPU. 

Answer = Control Signals

10. What does D in the D-flip flop stand for.

A. Digital 

B. Direct 

C. Delay 

D. Durable 

Answer = Delay

11. CPU has built-in ability to execute a particular set of machine instructions, called as __________. 

A. Instruction Set 

B. Registers 

C. Sequence Set 

D. User instructions 

Answer = Instruction Set

12. Opcode indicates the operations to be performed. 

A. True 

B. False 

C. Nothing Can be said 

D. None of the mentioned 

Answer = True

13. The length of a register is called _______. 

A. word limit 

B. word size 

C. register limit 

D. register size 

Answer = word size

14. The _________ holds the contents of the accessed memory word. 

A. MAR. 

B. MBR. 

C. PC. 

D. IR. 

Answer = MBR

15. Which of the following is not a visible register.

A. General Purpose Registers 

B. Address Register 

C. Status Register 

D. MAR. 

Answer = MAR

16. Which of the following is a data transfer instruction.

A. STA 16-bit address 

B. ADD A, B. 

C. MUL C, D. 

D. RET. 

Answer = STA 16-bit address

17. What is correct instruction if you want the control to go to the location 2000h.

A. MOV 2000h 

B. MOV A, 2000h 

C. JMP 2000h 

D. RET 2000h 

Answer = JMP 2000h

18. What kind of a flag is the sign flag.

A. General Purpose 

B. Status 

C. Address 

D. Instruction 

Answer = Status

19. The number of sign bits in a 32-bit IEEE format   __________. 

A. 1. 

B. 11. 

C. 9. 

D. 23. 

Answer = 1

20. New CPU whose instruction set includes the instruction set of its predecessor CPU is said to be ___________ with its predecessor. 

A. fully compatible 

B. forward compatible 

C. compatible 

D. backward compatible 

Answer = backward compatible

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