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Computer Organization & Architecture MCQ [ Set - 20 ] | Computer Organization Architecture Mcq

Computer Organization Architecture Mcq

Table of Content (toc)


1. Which of the following memory elements uses an RC circuit as its input?

    Unclocked D latch
    Level-clocked D latch
    Edge – triggered D flip-flop
ANSWER= (C) Edge – triggered D flip-flop


2. A subtractor is not usually present in a computer because 

    it is expensive
    it is not possible to design it 
     the adder will take care of subtraction.
ANSWER= (C) the adder will take care of subtraction.


3. information in registers

    Register transfer micro-operations
    Arithmetic operations
    Logic operations

ANSWER= (A) Register transfer micro-operations


4. The circuit used to store one bit of data is known as_______.

ANSWER= (D) Flip Flop


5. he cost of storing a bit is minimum in

    Cache memory 
ANSWER= (D) Tape.


6. The average time required to reach a storage location in memory and obtainits contents is called the _____.

     seek time
    turnaround time
    access time
ANSWER= (C) access time


7.  ___ execution is the temporal behaviour of the N-client 1-server model where one client is served at any given moment.

    Single data
ANSWER= (B) Concurrent


8.  Which of the following staement(s) is true ?

    ROM is read/write memory
    PC points to the last instruction that was executed
    Stack works on the principle of LIFO

ANSWER= (C) & (D)


9.  1 In the late 1970s, we observed the emerging of ___ that were high-performance computers for scientific computing.

    2. In the 1960s, the ___ used to be the most prevalent ones.

     Main-frame computers, Microcomputers
    Supercomputers, Main-frame computers
     Microcomputers, Supercomputers
ANSWER= (B) Supercomputers, Main-frame computers


10. ___ architecture supports the pipelined flow of vectors operands directly from the memory to pipelines and then back to memory.

    Memory to memory
    Register to memory
    Memory to register
ANSWER= (A) Memory to memory


11.  ___ Architecture uses vector registers to interface between the memory and functional lines.

    Memory to memory
    Register to memory
    Memory to register
ANSWER= (D) Register to register


12. In immediate addressing the operand is placed

     in the CPU register
    after OPcode in the instruction 
     in memory
ANSWER= (B) after OPcode in the instruction 


13. Memory unit accessed by content is called______.

     Read only memory
    Programmable Memory
    Virtual Memory
ANSWER= (D) Associative Memory


14. The minimum hardware required to construct a 3-to-8 decoder is using

    Two 2-to-4 decoders
    Two 2-to-4 decoders and two 1-to-2 decoders
    Depends upon the technology (TTL, CMOS, etc.)
ANSWER= (A) Two 2-to-4 decoders


15. Processors of all computers, whether micro, mini or mainframe must have - 

    Control Unit 
ANSWER= (D) All of the above


16. A flip-flop circuit can be used for

ANSWER= (A) Counting


17. Which one does not change the information content during the movement of binary 

136. . 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


18. Instruction in computer languages consists of - 

    Both of the above

ANSWER= (C) Both of the above


19. _________ register keeps track of the instructions stored in program storedin memory.

    AR (Address Register)
    XR (Index Register)
    PC (Program Counter)
ANSWER= (C) PC (Program Counter)


20.In which command, the interface responds by transmitting data?

    Data input
    Data output
ANSWER= (C) Data output


21. TLB is associated with

    Cache memory 
     Virtual memory.
    Primary memory
ANSWER= (D) All of the above


22. Exponent in floating point number can be represented by 

    Sign-magnitude form 
    1's complemented form
    2's complement form
ANSWER= (A) Sign-magnitude form


23. How many distinct functional units are present in CDC6600?

ANSWER= (A) 16


24.Pipeline architecture is more suitable for

    RISC architecture
     CISC architecture
    Hybrid architecture
ANSWER= (A) RISC architecture


25.  ___ is faster storage of copies of programs and data.



26. As per CPU concern Hard disk drive is

    type of Memory
    peripheral device 
    none of the above
ANSWER= (B) peripheral device 


27.  True/False

1. The sequential computer was improved bit-serial to word- parallel operations

2. The von-Neumann architecture is fast due to the sequential execution of instructions in the Program.

    Only 1
    Only 2
    Both 1 & 2
ANSWER= (A) Only 1


28. A Program Counter contains a number 825 and address part of the instruction contains the number 24. The effective address in the relative address mode, when an instruction is read from the memory is

ANSWER= (B) 850.


29. The term Computer Architecture was coined in ___ by the ‘Chief architects of the ___

    1974, 360 System
     1965, AT & T
    1964, IBM System
ANSWER= (C) 1964, IBM System


30. A page fault

    Occurs when there is an error in a specific page.
     Occurs when a program accesses a page of main memory.
    Occurs when a program accesses a page not currently in main memory.
ANSWER= (A) Occurs when a program accesses a page not currently in main memory.

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Computer Organization & Architecture MCQ Set -3(link)

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