Computer Organization and Architecture MCQ - Set 01 - ObjectiveBooks

Computer Organization and Architecture MCQ - Set 01

Practice Test: Question Set - 01

1. In Reverse Polish notation, expression A*B+C*D is written as
    (A) AB*CD*+
    (B) A*BCD*+
    (C) AB*CD+*
    (D) A*B*CD+

2. SIMD represents an organization that _________.
    (A) Refers to a computer system capable of processing several programs at the same time
    (B) Represents organization of single computer containing a control unit, processor unit and a memory unit
    (C) Includes many processing units under the supervision of a common control unit
    (D) None of the above

3. Floating point representation is used to store
    (A) Boolean values
    (B) Whole numbers
    (C) Real integers
    (D) Integers

4. Assembly language
    (A) Uses alphabetic codes in place of binary numbers used in machine language
    (B) Is the easiest language to write programs
    (C) Need not be translated into machine language
    (D) None of these

5. (2FAOC) 16 is equivalent to
    (A) (195 084) 10
    (B) (001011111010 0000 1100) 2
    (C) Both (a) and (b)
    (D) None of these

6. Which of the following is not a weighted code?
    (A) Decimal Number system
    (B) Excess 3-cod
    (C) Binary number System
    (D) None of these

7. The idea of cache memory is based
    (A) On the property of locality of reference
    (B) On the heuristic 90-10 rule
    (C) On the fact that references generally tend to cluster
    (D) All of the above

8. Which of the following is lowest in memory hierarchy?
    (A) Cache memory
    (B) Secondary memory
    (C) Registers
    (D) RAM

9. The addressing mode used in an instruction of the form ADD XY, is
    (A) Absolute
    (B) Indirect
    (C) Index
    (D) None of these

10. If memory access takes 20 ns with cache and 110 ns without it, then the ratio (cache uses a 10 ns memory) is
    (A) 93%
    (B) 90%
    (C) 88%
    (D) 87%

11. In a memory-mapped I/O system, which of the following will not be there?
    (A) LDA
    (B) IN
    (C) ADD
    (D) OUT

12. In a vectored interrupt.
    (A) The branch address is assigned to a fixed location in memory
    (B) The interrupting source supplies the branch information to the processor through an interrupt vector
    (C) The branch address is obtained from a register in the processor
    (D) None of the above

13. The circuit used to store one bit of data is known as
    (A) Encoder
    (B) OR gate
    (C) Flip-Flop
    (D) Decoder

14. Write Through technique is used in which memory for updating the data
    (A) Virtual memory
    (B) Main memory
    (C) Auxiliary memory
    (D) Cache memory

15. Generally Dynamic RAM is used as main memory in a computer system as it
    (A) Consumes less power
    (B) Has higher speed
    (C) Has lower cell density
    (D) Needs refreshing circuitry

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