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Computer Organization & Architecture MCQ Set - 14 | Computer Organization and Architecture mcq with Answers pdf

 

Computer Organization and Architecture mcq with Answers pdf


Table of Content (toc)

1. A 4-ary 3-cube hypercube architecture has

    3 dimensions with 4 nodes along each dimension 
    4 dimensions what 3 nodes along each dimension
    both (a) and (b)
ANSWER= (A) 3 dimensions with 4 nodes along each dimension 

 

2. Which one of the following Boolean expression represents the SUM output of a HALF-ADDER.

    A.B
    A+B
     A’.B’+A.B
ANSWER= (A) A.B

 

3. In a memory-mapped I/O system, which of the following will not be there?

    LDA
    IN
    ADD
ANSWER= (A) LDA

 

4. Which of these are examples of 2-dimensional topologies in static networks?

    Mesh
    3CCC networks
    Linear array
ANSWER= (A) Mesh

 

5. 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

 

6. Emitter coupled logic (ECL) belonging to bipolar family is

     The faster logic family and used in high speed application
    Most popular family of SSI and MSI chips
    Closet and obsolete
ANSWER= (A) The faster logic family and used in high speed application

 

7.How is it possible that both programs and date can be stored in the same floppy disk?

     Programs and data are both software and both can be stored in any memory device
     Floppy disks can only store data, not programs
    A floppy disk has to be formatted for one or for the other
ANSWER= (A) Programs and data are both software and both can be stored in any memory device

 

8. The seek time of a disk is 30 ms. It rotates at the rate of 30 rotations/second. The capacity of each track is 300 words. The access time is approximately

    62 ms
    60 ms
     47 ms
ANSWER= (D) none of these

 

9. The information is burnt (prerecorded) into the _____ chip at manufacturing time.

    PRAM
     PROM
     ROM
ANSWER= (C) ROM

 

10. What does drive D or E symbolise?

    Floppy drive
    Hard disk
    Second floppy drive
ANSWER= (D) CD-ROM drive

 

11. For two instructions / and / WAR hazard occur, if

     R(I) D(J)*ø 
     R(I) R(J) Ø
    D(I) R(J) #ø
ANSWER= (C) D(I) R(J) #ø

 

12. The superscalar issue was first formulated as early as ___. The superscalar processors have to issue multiple instructions per cycle, the first task necessarily is ___.

    1970, parallel decoding
     1975, Pipelines
    1980, CISC processors
ANSWER= (A)  1970, parallel decoding

 

13. Which operation puts memory address in memory address register and data in DR:

    Memory read
    Memory Write
    Both
ANSWER= (B) Memory Write

 

14.The performance of a pipelined processor suffers if

    the pipeline stages have different delays
     Consecutive instructions are dependent on each other 
     the pipeline stages share hardware resources
ANSWER= (D) all of these 

 

15. An interface that provides I/O transfer of data directly to and form the memory unitand peripheral is termed as

     DDA.
    Serial interface.
    BR.
ANSWER= (D) DMA.

 

16. Bit in short for

     Binary unit
    Binary digit
    Digital byte
ANSWER= (B) Binary digit

 

17. A single bus structure is primarily found in

    Main frames 
    High performance machines
    Mini and Micro-computers
ANSWER= (C) Mini and Micro-computers

 

18. The performance of a memory system is defined by two different measures, the access time and the memory _____ time.

    response
    cycle
     access
ANSWER= (B) cycle

 

19. The beginning of the architecture of the Itanium processor took place at ___.

     Intel
    Microsoft
    Hewlett-Packard
ANSWER= (C) Hewlett-Packard

 

20. What will be the speed up for a four-stage linear pipeline, when the number of instruction n=64?

    4.5 
    7.1
     6.5
ANSWER= (D) none of these

 

21. Which Algorithm is better choice for pipelining?

    Small Algorithm
    Hash Algorithm
    Merge-Sort Algorithm
ANSWER= (C) Merge-Sort Algorithm

 

22. A memory space used for the temporary storage of data is

    Buffer
    Scratchpad storage
     PROM
ANSWER= (B) Scratchpad storage

 

23. Dynamic pipeline allows

    Multiples functions to evaluate 
    only streamline connection
    to perform fixed function
ANSWER= (A) Multiples functions to evaluate 

 

24.The correspondence between the main memory blocks and those in the cache is given by                    

    Hash function
     Mapping function
     Locale function
ANSWER= (B) Mapping function

 

25. The binary equivalent of the decimal number 0.4375 is

    0.0111
    0.1011
    0.1100
ANSWER= (A) 0.0111

 

26. What is à main advantage of classical vector systems (VS) compared with RISC based systems (RS)?

    VS have significantly higher memory bandwidth than RS
    VS have higher clock rate than RS 
    VS are more parallel than RS
ANSWER= (A) VS have significantly higher memory bandwidth than RS

 

27.The reason for the implementation of the cache memory is                  

    To increase the internal memory of the system
    The difference in speeds of operation of the processor and memory
    To reduce the memory access and cycle time
ANSWER= (B) The difference in speeds of operation of the processor and memory

 

28. The division of stages of a pipeline into sub-stages is the basis for 

     pipelining 
     super-pipelining 
    superscalar
ANSWER= (A) pipelining 

 

29.Consider the below-mentioned statements with respect to the dataflow graph:

1. Dataflow graph is also called a flow dependency graph.

2. Dataflow graph is asynchronous as the execution of a node starts when matching data is available at a node’s input ports.

State True or False:

    1- True, 2- True
    1- True, 2- False
    1- False, 2- True
ANSWER= (A)  1- False, 2- True

 

30. Difference between RISC and CISC is

    RISC is more complex 
    CISC is more effective
    RISC is better optimizable
ANSWER= (A) RISC is more complex 



                                                                                                                                            




Computer Organization & Architecture MCQ Set -3(link)











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