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Computer Science :: Operating System

  1. Under multiprogramming, turnaround time for short jobs is usually _____ and that for long jobs is slightly _____.

  2. A.

     lengthened; shortened

    B.

     shortened; lengthened

    C.

     shortened; shortened

    D.

     lengthened; lengthened

    E.

     None of the above


  3. The most common systems security method is

  4. A.

     passwords

    B.

     encryption

    C.

     firewall

    D.

     all of the above

    E.

     None of the above


  5. Two basic types of operating systems are:

  6. A.

     sequential and direct

    B.

     batch and timesharing

    C.

     sequential and realtime

    D.

     batch and interactive

    E.

     None of the above


  7. Daisy chain is a device for

  8. A.

     connecting a number of controllers to a device

    B.

     connecting a number of devices to a controller

    C.

     interconnecting a number of devices to a number of controllers

    D.

     all of the above

    E.

     None of the above


  9. In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

  10. A.

     recognition of basic syntactic constructs through reductions

    B.

     recognition of basic elements and creation of uniform symbols

    C.

     creation of more optional matrix

    D.

     use of macro processor to produce more optimal assembly code

    E.

     None of the above


  11. An instruction in a programming language that is replaced by a sequence of instructions prior to assembly or compiling is known as

  12. A.

     procedure name

    B.

     macro

    C.

     label

    D.

     literal

    E.

     None of the above


  13. A program

  14. A.

     is a device that performs a sequence of operations specified by instructions in memory.

    B.

     is the device where information is stored

    C.

     is a sequence of instructions

    D.

     is typically characterized by interactive processing and time of the CPU

    E.

     None of the above


  15. A self-relocating program is one which

  16. 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


  17. Banker's algorithm for resource allocation deals with

  18. A.

     deadlock prevention

    B.

     deadlock avoidance

    C.

     deadlock recovery

    D.

     mutual exclusion

    E.

     None of the above


  19. A sequence of instructions, in a computer language, to get the desired result, is known as

  20. A.

     Algorithm

    B.

     Decision Table

    C.

     Program

    D.

     All of the above

    E.

     None of the above