Type Here to Get Search Results !

Computer Organization & Architecture MCQ [ Set - 4 ] | Computer Organization and Architecture mcq with Answers

 

computer organization and architecture mcq with answers




Table of Content (toc)


1. The less space consideration as lead to the development of (for large memories).





ANSWER= (D) Both SIMM’s and DIMS’s

 

2. Polled intrrupet are handled by

    software
    hardware
    firmware
ANSWER= (A) software

 

3.  Consider a memory organised into 8K rows, and that it takes 4 cycles to complete a read operation. Then the refresh overhead of the chip is              

     0.0021
     0.0038
    0.0064
ANSWER= (B)  0.0038

 

4.  The half adder performs

     Decimal addition operation for 2 decimal inputs
    Binary addition operation for 2 binary inputs
    Decimal addition operation for 2 binary inputs
ANSWER= (C) Decimal addition operation for 2 binary inputs

 


5.  (2FAOC)16

     (195084)10 
     (00101111101000001100)2 
    Both (a) and (b)
ANSWER= (B)  (00101111101000001100)2 

 

6.  In a normal n-bit adder, to find out if an overflow has occurred, we make use of

    AND gate
     NAND gate
    NOR gate
ANSWER= (D) XOR gate

 

7.  A Flip-Flop circuit can be used for

    Counting
    Scaling
    Rectification
ANSWER= (A) Counting

 

8.  Given a 5 stage pipeline with stages taking 1,2,3,1, 1 units of time, the clock period of the pipeline is


     1/8
    1/3

ANSWER= (D) 3

 

9.  A 32-bit address bus allows access to a memory of capacity

    64 Mb
    16 Mb
    1 Gb
ANSWER= (D)  4 Gb

 

10.  Which of the following data transfer mode takes relatively more time?

    DMA
    interrtupt initiated I/O
    programmed I/O
ANSWER= (C)programmed I/O

 

11.  Which of the following shift operations divide a signed binary number by 2 ?

    Logical left shift
    Logical right shift
    Arithmetic left shift
ANSWER= (B) Logical right shift

 

12. For which of the following multiplier numbers in Booth's algorithm maximum no. of additions and subtractions are required? 

     01001111
    01111000
    00001111
ANSWER= (C) 00001111

 

13.  Which of the following holds data and processing instructions temporarily unit the CPU needs it?

     ROM
    control unit
    main memory
ANSWER= (C) main memory

 

14. Octal equivalent of hexadecimal code, F3A1 is

    173101
     176541
     171641
ANSWER= (C) 171641

 

15. The resolution of the D/A converter is approximately 0.4% of its full-scale range. It is a

    8 – bit converter
    10 – bit converter
    12– bit converter
ANSWER= (A) 8 – bit converter

 

16. The operation which is cumulative but not associative is

    AND
     OR
    EX-OR
ANSWER= (D)  NAND

 

17. The dual of the boolean theorm A.(B+C) = A.B + A.C is

    A + (B+C) = A.B + A.C
    A.(B+C) = (A+B) + (A+C)
    A+B.C = (A+B) + (A+C)

ANSWER= (C) A+B.C = (A+B) + (A+C)

 

18. Which is true 

A. For the pipelines – when an instruction is installed, all instructions issued.

B. Hazards in the pipelines can make it necessary to stall the pipelines

C. New instructions are fetched during the stall

D. Control Hazards can cause a greater performance loss than the data hazards

    A & B
    A, C, & D only
    A, B & D Only
ANSWER= (C) A, B & D Only

 

19. Generally Dynamic RAM is used as main memory in a computer system asit______.

    Consumes less power
    has higher speed
    has lower cell density
ANSWER= (B) has higher speed

 

20. Write Through technique is used in which memory for updating the data_____.

    Virtual memory
    Main memory
    Auxiliary memory

ANSWER= (D) Cache memory

 

21. Cache memory acts between_______.





ANSWER= (A) CPU and RAM

 

22. SIMD represents an organization that

    refers to a computer system capable of processing several programs at the same time.
    represents organization of single computer containing a control unit, processor unit and a memory unit.
    includes many processing units under the supervision of a common control unit
ANSWER= (C) includes many processing units under the supervision of a common control unit

 

23. A Stack-organised Computer uses instruction of _____.

     Indirect addressing
    Two-addressing
    Zero addressing
ANSWER= (C) Zero addressing

 

24.In a program using subroutine call instruction, it is necessary______.

    initialize program counter
    Clear the accumulator
    Reset the microprocessor

ANSWER= (D) Clear the instruction register

 

25. Virtual memory consists of _______.

    Static RAM
    Dynamic RAM
     Magnetic memory
ANSWER= (A) Static RAM

 

26. CARRY, in half adder, can be obtained using

    EX-OR gate
    AND gate
    OR-gate
ANSWER= (B) AND gate

 

27.  A NAND gate has inputs A and B. It's output is connected to the both of the inputs of another NAND gate. An equivalent gate for these two NAND gates is

    OR gate
    AND gate
    NOR gate

ANSWER= (B) AND gate

 

28.What characteristic of RAM memory makes it not suitable for permanent storage?

    too slow
    unreliable
    it is volatile

ANSWER= (C) it is volatile

 

29. Computers use addressing mode techniques for _____________________.

    giving programming versatility to the user by providing facilities as pointers to memory counters for loop control
    to reduce no. of bits in the field of instruction
    specifying rules for modifying or interpreting address field of the instruction

ANSWER= (D)  All the above

 

30. Both the arithmetic logic unit (ALU) and control selection of CPU employ special purpose storage locations called

     decoders
    buffers
    multiplexer
ANSWER= (A) registers





Previous(demo)                                                                                                                        Next(demo)
                                                                                                                                            




Computer Organization & Architecture MCQ Set -3(link)








Friends if you like this post,kindly comment bellow and do share your responce.Thank You for Visiting.

Post a Comment

0 Comments
* Please Don't Spam Here. All the Comments are Reviewed by Admin.

Top Post Ad

Below Post Ad