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  1. Phase shift keying (psk) method is used to modulate digital signals at 9600 bps using 16 levels. Find the line signaling speed (i.e., modulation rate)

  2. A.

     2400 bands

    B.

     1200 bands

    C.

     4800 bands

    D.

     9600 bands

    E.

     DHCP Management Console


  3. You are in the process of analyzing a problem that requires you to collect and store TCP/IP Packets. Which of the following utilities is best suited for this purpose?

  4. A.

     NBTSTAT

    B.

     Performance Monitor

    C.

     NETSTAT

    D.

     Network Monitor

    E.

     DHCP Management Console


  5. A software that allows a personal computer to pretend it as a terminal is

  6. A.

     auto-dialing

    B.

     bulletin board

    C.

     modem

    D.

     terminal emulation

    E.

     None of the above


  7. What is the name of the network topology in which there are bi-directional links between each possible node?

  8. A.

     Ring

    B.

     Star

    C.

     Tree

    D.

     Mesh

    E.

     None of the above


  9. What is the main purpose of a data link content monitor?

  10. A.

     to detect problems in protocols

    B.

     to determine the type of transmission used in a data link

    C.

     to determine the type of switching used in a data link.

    D.

     to determine the flow of data

    E.

     None of the above


  11. Synchronous protocols

  12. A.

     transmit characters one at a time

    B.

     allow faster transmission than asynchronous protocols do

    C.

     are generally used by personal computers

    D.

     are more reliable

    E.

     None of the above


  13. To set up a bulletin board system you need

  14. A.

     a smart modem with auto-answer capabilities

    B.

     a telephone line

    C.

     a personal computer

    D.

     All of the above

    E.

     None of the above


  15. Videotex is a combination of

  16. A.

     television

    B.

     communication

    C.

     computer technology

    D.

     All of the above

    E.

     None of the above


  17. Which of the following frequency ranges is used for AM radio transmission?

  18. A.

     Very Low Frequency : 3 kHz to 30 kHz

    B.

     Medium Frequency : 300 kHz to 3 MHz

    C.

     High Frequency : 3 MHz to 30 MHz

    D.

     Very High Frequency : 30 MHz to 300 MHz

    E.

     None of the above


  19. Baseband is

  20. A.

     transmission of signals without modulation

    B.

     a signal all of whose energy is contained within a finite frequency range

    C.

     the simultaneous transmission of data to a number of stations

    D.

     All of the above

    E.

     None of the above