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Computer Organization & Architecture MCQ [ Set -3 ] | Mcq on Computer Organization and Architecture

 

mcq on computer organization and architecture



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1.A decimal no. has 30 digits. Approximately, how many would the binary representation have?

    30 



ANSWER= (A) 90

 

2.  Which one of the following is a characteristic of CISC (Complex Instruction Set Computer)

    Fixed format instructions
    Variable format instructions
    Instructions are executed by hardware
ANSWER= (B) Variable format instructions

 

3.Which of the following is another name for a chip?

     Semiconductor
    Silicon chip
    Integrated circuit
ANSWER= (C) Integrated circuit

 

4. Which of the following is a main memory

    Secondary memory.
    Auxiliary memory.
    Cache memory.
ANSWER= (C) Cache memory.

 

5. The logic circuit in ALU is

     Entirely combinational 
    Entirely sequential
    Combinational cum sequential
ANSWER= (C) Combinational cum sequential

 

6. CD-RW disk

    can be erased and rewritten
    holds less data than a floppy disk
    is a form of optical disk, so it can only be written once

ANSWER= (A) can be erased and rewritten

 

7. A floating point number that has a O in the MSB of mantissa is said tohave_____.

    Overflow
    Underflow
    Important number
ANSWER= (B) Underflow

 

8. Equivalent hexadecimal of (76575372)s will be 

    FAFAFA
    FAFAFF 
    FFFAAA
ANSWER= (B) FAFAFF 

 

9. Octal number system is

    A positional system with weights 0 to 9
    A positional system with weights 0 to 8
    A positional system with weights 0 to 7
ANSWER= (C) A positional system with weights 0 to 7

 

10. A 4 digit BCD number can be represented with the help of

    10 bits
     8 bits
    12 bits
ANSWER= (D) 16 bits

 

11.  A truth table of the n variables has … Minterms

     N2
     (n-1)2
    2n
ANSWER= (C) 2n

 

12. Which of the following shift operations divide a signed binary number of 2

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

 

13. In computers, subtraction is generally carried out by ______.

    9’s complement
     10’s complement
    1’s complement
ANSWER= (D) 2’s complement

 

14. Assembly language ________.

     uses alphabetic codes in place of binary numbers used in machine language
    is the easiest language to write programs
     need not be translated into machine language
ANSWER= (A)  uses alphabetic codes in place of binary numbers used in machine language

 

15. Which media has the ability to have data/information stored (Written) on them by users more than once?

     Opti-Disks
     Zip disks
     CD-RW disks
ANSWER= (C) CD-RW disks

 

16. A floating point number that has a O in the MSB of mantissa is said tohave_____.





ANSWER= (B) Underflow

 

17. If you convert (+46.5) into a 24 bit floating point binary number following IEEE convention, what would be the exponent?

     00011100
     0000011
     1100010
ANSWER= (D) none of these

 

18. Cray-11 holds

    16 bits of information
    32 bits of information
    64 bits of information
ANSWER= (C) 64 bits of information

 

19. The circuit used to store one bit of data is known as ______.

    Encoder
    OR gate
    Flip Flop
ANSWER= (C) Flip Flop

 

20. The maximum number of additions and subtractions are required for which of the following multiplier numbers in Booth's algorithm

    01000 1111 
    0111 1000
     0000 1111

ANSWER= (D) 0101 0101

 

21. Father of punched card processing was

    Blasé pascal
     Charles Babbage
     Dr. Herman Hollerith
ANSWER= (C) Dr. Herman Hollerith

 

22. ___ is a memory-memory vector machine and fetches vectors directly from memory to load the pipelines as well as stores the pipeline outcomes directly to memory.

     CCF Cyber 205
     CCD Cyber 205
     CDC Cyber 205
ANSWER= (C)  CDC Cyber 205

 

23. Fine-grain threading is considered as a ___ threading.

    Instruction-level
     Loop level
    Task-level
ANSWER= (A) Instruction-level

 

24. By logical left-shifting the content of a register once, its content is

    doubled
    halved
     both (a) and (b)
ANSWER= (D) No such decision can be made

 

25. Floating point representation is used to store

    Boolean values
    whole numbers
    real integers
ANSWER= (C) real integers

 

26. Floating point representation is used to store 

    Boolean values
    Whole numbers
    Real numbers 
ANSWER= (C) Real numbers 

 

27. The BUS that allows I/O, memory and Processor to coexist is                

     Attributed BUS
     Processor BUS
    Backplane BUS
ANSWER= (C) Backplane BUS

 

28. A Toggle Flip-Flop can be constructed using a J-K Flip-Flop by connecting the

    Toggle input to J and inverted form of toggle input to K
     The toggle input to J
    Inverted form of toggle input to K

ANSWER= (A)Toggle input to J and inverted form of toggle input to K

 

29. Which memory unit has lowest access time?

    cache
     registers
    magnetic disk
ANSWER= (B) registers

 

30. A given memory chip has 12 address pins and 4 data pins. It has the ...... number of locations.


    2¹2
    2¹8
ANSWER= (B) 2¹2





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Computer Organization & Architecture MCQ Set -3(link)






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