Computer Architecture MCQs Set-10

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  1. 1. A ___________development system and an ______are essential tools for writing large assembly language programs.
    • Microprocessor, assembler
  2. 2. In an operation performed by the ALU, carry bit is set to 1 if the end carry C 8 is ________. It is cleared to 0 (zero) if the carry is ______ _______.
    • One, zero
  3. 3. A successive A/D converter is
    • a high-speed converter.
    • a low speed converter.
    • a medium speed converter.
    • none of these.
  4. 4. When necessary, the results are transferred from the CPU to main memory by
    • I/O devices.
    • CPU
    • shift registers.
    • none of these.
  5. 5. A combinational logic circuit which sends data coming from a single source to two or more separate destinations is
    • Decoder
    • Encoder
    • Multiplexer
    • Demultiplexer
  6. 6. In which addressing mode the operand is given explicitly in the instruction
    • Absolute
    • Immediate 
    • Indirect
    • Direct
  7. 7. A stack organized computer has
    • Three-address Instruction.
    • Two-address Instruction.
    • One-address Instruction.
    • Zero-address Instruction.
  8. 8. 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
    • 849
    • 850
    • 801
    • 802
  9. 9. 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.
    • Occurs when a program accesses a page belonging to another program.
  10. 10. In a program using subroutine call instruction, it is necessary______.
    • initialize program counter
    • Clear the accumulator
    • Reset the microprocessor
    • Clear the instruction register