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Computer Science :: Computer Networking

  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.


  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


  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


  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


  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


  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


  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


  15. FDDI is a

  16. A.

     ring network

    B.

     star network

    C.

     mesh network

    D.

     bus based network

    E.

     None of the above


  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


  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