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  1. What is the loopback address?

  2. A.

     127.0.0.1

    B.

     255.0.0.0

    C.

     255.255.0.0

    D.

     255.255.255.255.0

    E.

     None of the above

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  3. An ROP would be attached to a

  4. A.

     simplex channel

    B.

     duplex channel

    C.

     half duplex channel

    D.

     full duplex channel

    E.

     None of the above

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  5. Who originally designed TCP/IP?

  6. A.

     The Department of Defense

    B.

     Novell

    C.

     IBM

    D.

     Xerox

    E.

     None of the above

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  7. The systematic access of small computers in a distributed data processing system is referred to as:

  8. A.

     dialed service

    B.

     multiplexing

    C.

     polling

    D.

     conversational mode

    E.

     None of the above

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  9. The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as:

  10. A.

     modulation

    B.

     demodulation

    C.

     synchronizing

    D.

     synchronizing

    E.

     None of the above

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  11. An example of digital, rather than analog, communication is

  12. A.

     DDD

    B.

     DDS

    C.

     WATS

    D.

     DDT

    E.

     None of the above

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  13. How many OSI layers are covered in the X.25 standard?

  14. A.

     two

    B.

     three

    C.

     seven

    D.

     six

    E.

     None of the above

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  15. A band is always equivalent to

  16. A.

     a byte

    B.

     a bit

    C.

     100 bits

    D.

     16 bits

    E.

     None of the above

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  17. What is the port number for HTTP?

  18. A.

     99

    B.

     86

    C.

     80

    D.

     23

    E.

     None of the above

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  19. The most flexibility in how devices are wired together is provided by

  20. A.

     bus networks

    B.

     ring networks

    C.

     star networks

    D.

     T-switched networks

    E.

     None of the above

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