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  • Question
  • The instruction register


  • Options
  • A. is a hardware memory device which denotes the location of the current instruction being executed.
  • B. is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
  • C. contains the address of the memory location that is to be read from or stored into.
  • D. contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
  • E. None of the above

  • Correct Answer
  • is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory. 


  • Operating Systems Concepts problems


    Search Results


    • 1. Which of the following statements is not true about the FORTRAN language?

    • Options
    • A. FORTRAN is a high level language
    • B. A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine
    • C. FORTRAN is extensively used to write programs for performing scientific computations
    • D. All of the above
    • E. None of the above
    • Discuss
    • 2. Multiprogramming systems:

    • Options
    • A. are easier to develop than single programming system
    • B. execute each job faster
    • C. execute more jobs in the same time period
    • D. are used only on large mainframe computers
    • E. None of the above
    • Discuss
    • 3. The Operating system manages

    • Options
    • A. Memory
    • B. Processor
    • C. Disks and I/O devices
    • D. All of the above
    • E. None of the above
    • Discuss
    • 4. The higher versions of the operating systems are so written that programs designed for earlier versions can still be run. What is it called?

    • Options
    • A. Upgradability
    • B. Upward mobility
    • C. Universality
    • D. Upward compatibility
    • E. None of the above
    • Discuss
    • 5. A self-relocating program is one which

    • Options
    • A. cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.
    • B. consists of a program and relevant information for its relocation.
    • C. can itself performs the relocation of its address-sensitive portions.
    • D. All of the above
    • E. None of the above
    • Discuss
    • 6. Which policy replace a page if it is not in the favoured subset of a process's pages?

    • Options
    • A. FIFO
    • B. LRU
    • C. LFU
    • D. Working set
    • E. None of the above
    • Discuss
    • 7. Which of the following is a measure to test how good or bad a modular design is

    • Options
    • A. Module strength
    • B. Module coupling
    • C. Static analysis
    • D. All of the above
    • E. None of the above
    • Discuss
    • 8. Information in a memory that is no longer valid or wanted is known as

    • Options
    • A. non-volatile
    • B. volatile
    • C. surplus
    • D. garbage
    • E. None of the above
    • Discuss
    • 9. The principles of structured programming forbid the use of

    • Options
    • A. WHILE-DO
    • B. GOTO
    • C. IF-THEN-ELSE
    • D. DO-WHILE
    • E. None of the above
    • Discuss
    • 10. Which of the following filename extension suggests that the file is a backup copy of another file?

    • Options
    • A. TXT
    • B. COM
    • C. BAS
    • D. BAK
    • E. None of the above
    • Discuss


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