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  • Question
  • During a read operation the CPU fetches ________.


  • Options
  • A. a program instruction
  • B. another address
  • C. data itself
  • D. all of the above

  • Correct Answer
  • all of the above 


  • Computers problems


    Search Results


    • 1. Which method bypasses the CPU for certain types of data transfer?

    • Options
    • A. Software interrupts
    • B. Interrupt-driven I/O
    • C. Polled I/O
    • D. Direct memory access (DMA)
    • Discuss
    • 2. Which is not an operand?

    • Options
    • A. Variable
    • B. Register
    • C. Memory location
    • D. Assembler
    • Discuss
    • 3. Which of the following is not an arithmetic instruction?

    • Options
    • A. INC (increment)
    • B. CMP (compare)
    • C. DEC (decrement)
    • D. ROL (rotate left)
    • Discuss
    • 4. Which of the following is not a basic element within the microprocessor?

    • Options
    • A. Microcontroller
    • B. Arithmetic logic unit (ALU)
    • C. Register array
    • D. Control unit
    • Discuss
    • 5. Which is not part of the execution unit (EU)?

    • Options
    • A. Arithmetic logic unit (ALU)
    • B. Clock
    • C. General registers
    • D. Flags
    • Discuss
    • 6. The Pentium microprocessor has a data bus of ________.

    • Options
    • A. 16 bits
    • B. 32 bits
    • C. 64 bits
    • D. 128 bits
    • Discuss
    • 7. The Pentium can address ________.

    • Options
    • A. 1 MB
    • B. 1 GB
    • C. 2 GB
    • D. 4 GB
    • Discuss
    • 8. A port can be ________.

    • Options
    • A. strictly for input
    • B. strictly for output
    • C. bidirectional
    • D. all of the above
    • Discuss
    • 9. The process of jointly establishing communication is called ________.

    • Options
    • A. DMA
    • B. bidirectional addressing
    • C. multiplexing
    • D. handshaking
    • Discuss
    • 10. With interrupt-driven I/O, if two or more devices request service at the same time, ________.

    • Options
    • A. the device closest to the CPU gets priority
    • B. the device that is fastest gets priority
    • C. the device assigned the highest priority is serviced first
    • D. the system is likely to crash
    • Discuss


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