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  1. What is the name given to the exchange of control signals which is necessary for establishing a connection between a modem and a computer at one end of a line and another modem and computer at the other end?

  2. A.

     Handshaking

    B.

     Modem options

    C.

     Protocol

    D.

     Duplexing

    E.

     None of the above

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  3. A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:

  4. A.

     Fiber optic cables

    B.

     Cellular phone systems

    C.

     Telecommunications processors

    D.

     Telecommunications software

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  5. After you have verified that TCP/IP is installed correctly, what is the next step in verifying the TCP/IP configuration?

  6. A.

     Ping the broadcast address

    B.

     Ping the Microsoft Web site

    C.

     Ping a distant router.

    D.

     Ping the address of the local host

    E.

     None of the above

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  7. Which utility is useful for troubleshooting NetBIOS name resolution problems?

  8. A.

     NBTSTAT

    B.

     Netstat

    C.

     PING

    D.

     Hostname

    E.

     None of the above

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  9. The EIA-232 interface has _____ pins.

  10. A.

     20

    B.

     24

    C.

     25

    D.

     30

    E.

     None of the above

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  11. In OSI model, which of the following layer transforms information from machine format into that understandable by user

  12. A.

     application

    B.

     presentation

    C.

     session

    D.

     physical

    E.

     None of the above

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  13. The channel in the data communication model can be

  14. A.

     postal mail service

    B.

     telephone lines

    C.

     radio signals

    D.

     All of the above

    E.

     None of the above

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  15. Which of the following is an important characteristic of LAN?

  16. A.

     application independent interfaces

    B.

     unlimited expansion

    C.

     low cost access for low bandwidth channels

    D.

     parallel transmission

    E.

     None of the above

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  17. Which of the following is a wrong example of network layer:

  18. A.

     Internet Protocol (IP) ARPANET

    B.

     X. 25 Packet Level Protocol (PLP) - ISO

    C.

     Source routing and Domain naming - Usenet

    D.

     X.25 level 2 - ISO

    E.

     None of the above

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  19. A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?

  20. A.

     2 seconds

    B.

     20 seconds

    C.

     120 seconds

    D.

     12 seconds

    E.

     None of the above

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