Computer Architecture MCQs Set-4

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  1. 1. Logic X-OR operation of (4ACO) H & (B53F) H results
    • AACB
    •  0000
    • FFFF
    • ABCD
  2. 2. When CPU is executing a Program that is part of the Operating System, it is said to be in
    • Interrupt mode
    • System mode
    • Half mode
    • Simplex mode
  3. 3. An n-bit microprocessor has
    • n-bit program counter
    • n-bit address register
    • n-bit ALU
    • n-bit instruction register
  4. 4. Cache memory works on the principle of
    • Locality of data
    • Locality of memory
    • Locality of reference
    • Locality of reference & memory
  5. 5. The main memory in a Personal Computer (PC) is made of
    • cache memory
    • static RAM
    • Dynamic Ram
    • both (A) and (B)
  6. 6. In computers, subtraction is carried out generally by
    • 1’s complement method
    • 2’s complement method
    • signed magnitude method
    • BCD subtraction method
  7. 7. PSW is saved in stack when there is a
    • interrupt recognised
    • execution of RST instruction
    • Execution of CALL instruction
    • All of these
  8. 8. The multiplicand register & multiplier register of a hardware circuit implementing booth’s algorithm have (11101) & (1100). The result shall be
    • (812) 10
    •  (-12) 10
    • (12) 10
    • (-812) 10
  9. 9. The circuit converting binary data in to decimal is
    • Encoder
    • Multiplexer
    • Decoder
    • Code converter
  10. 10. A three input NOR gate gives logic high output only when
    • one input is high
    • one input is low
    • two input are low
    • all input are high