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  1. Demodulation is a process of

  2. A.

     converting analog to digital signals

    B.

     converting digital to analog signals

    C.

     multiplexing various signals into one high speed line signals

    D.

     performing data description.

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  3. Internet-like networks between a company and its business partners. Select the best fit for answer:

  4. A.

     Bandwidth alternatives

    B.

     Switching alternating

    C.

     Inter organizational networks

    D.

     Extranets

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  5. An example of an analog communication method is

  6. A.

     laser beam

    B.

     microwave

    C.

     voice grade telephone line

    D.

     All of the above

    E.

     None of the above

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  7. Which of the following layer protocols are responsible for user and the application programme support such as passwords, resource sharing, file transfer and network management?

  8. A.

     Layer 7 protocols

    B.

     Layer 6 protocols

    C.

     Layer 5 protocols

    D.

     Layer 4 protocols

    E.

     None of the above

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  9. What frequency range is used for FM radio transmission?

  10. A.

     Very Low Frequency : 3 kHz to 30. kHz

    B.

     Low Frequency : 30 kHz to 300 kHz

    C.

     High Frequency : 3 MHz to 30 MHz

    D.

     Very High Frequency : 30 MHz to 300 MHz

    E.

     None of the above

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  11. Transmission of computerised data from one location to another is called

  12. A.

     data transfer

    B.

     data flow

    C.

     data communication

    D.

     data management

    E.

     None of the above

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  13. Compared to analog signals, digital signals

  14. A.

     allow faster transmission

    B.

     are more accurate

    C.

     both A and B

    D.

     All of the above

    E.

     None of the above

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  15. FDDI is a

  16. A.

     ring network

    B.

     star network

    C.

     mesh network

    D.

     bus based network

    E.

     None of the above

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  17. An anticipated result from multiprogramming operations is:

  18. A.

     reduced computer idle time

    B.

     the handling of more jobs

    C.

     better scheduling of work

    D.

     All of the above

    E.

     None of the above

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  19. A central computer surrounded by one or more satellite computers is called a

  20. A.

     bus network

    B.

     ring network

    C.

     star network

    D.

     All of the above

    E.

     None of the above

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