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Computer Science :: Operating System

  1. An incremental backup

  2. A.

     should be done each month

    B.

     uses more tapes

    C.

     saves all files

    D.

     saves only files that have recently changed

    E.

     None of the above

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  3. The powerful text editor called PC-Write can be used by anybody by paying a small fee. Such programs are called

  4. A.

     Software

    B.

     Shareware

    C.

     Firmware

    D.

     Mindware

    E.

     None of the above

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  5. The disadvantages of "Compile and Go" loading scheme is (are):

  6. A.

     a portion of memory is wasted because the core occupied by the assembler is unavailable to the object program.

    B.

     it is necessary to retranslate the user's program deck every time it is run.

    C.

     it is very difficult to handle multiple segments, especially if the source programs are in different languages, and to produce orderly modular programs.

    D.

     all of the above

    E.

     None of the above

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  7. The operating system of a computer serves as a software interface between the user and

  8. A.

     hardware

    B.

     peripheral

    C.

     memory

    D.

     screen

    E.

     None of the above

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  9. Which of the following statement is true.

  10. A.

     The LRU algorithm pages out pages that have been used recently

    B.

     Thrashing is a natural consequence of virtual memory systems.

    C.

     Seek analysis is used for analysing control-unit busy problems.

    D.

     All of the above

    E.

     None of the above

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  11. Which of the following is a phase of a compilation process

  12. A.

     Lexical analysis

    B.

     Code generation

    C.

     Both of the above

    D.

     Static analysis

    E.

     None of the above

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  13. Which are the most important features of Microsoft Windows program?

  14. A.

     Windows

    B.

     Pull-down menus

    C.

     Icons

    D.

     All of the above

    E.

     None of the above

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  15. Which of the following system program forgoes the production of object code to generate absolute machine code and load it into the physical main storage location from which it will be executed immediately upon completion of the assembly?

  16. A.

     two pass assembler

    B.

     load-and-go assembler

    C.

     macroprocessor

    D.

     compiler

    E.

     None of the above

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  17. Virtual memory is

  18. A.

     simple to implement

    B.

     used in all major commercial operating systems

    C.

     less efficient in utilization of memory

    D.

     useful when fast I/O devices are not available

    E.

     None of the above

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  19. Object code

  20. A.

     is ready to execute

    B.

     is the output of compilers, but not assemblers

    C.

     must be "loaded" before execution

    D.

     must be rewritten before execution

    E.

     None of the above

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