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  1. Which of the following statement is incorrect?

  2. A.

     The transport layer provides for any format, translationer code conversion necessary to put the data into an intelligible format.

    B.

     The presentation layer transforms information from machine format to the understandable format.

    C.

     The data link layer handles the transfer of data between the ends of a physical link.

    D.

     All of the above

    E.

     None of the above


  3. When you connect to an online information service, you are asked to provide some kind of identification such as your name, an account number and a password. What is the name given to this brief dialogue between you and the information system?

  4. A.

     Security procedure

    B.

     Safeguard procedure

    C.

     Identification procedure

    D.

     Log-on procedure

    E.

     None of the above


  5. Bus is

  6. A.

     one or more conductors that some as a common connection for a related group of devices

    B.

     a continuous frequency capable of being modulated or impressed with a second signal

    C.

     the condition when two or more stations attempt to use the same channel at the same time

    D.

     a collection of interconnected functional units that provides a data communications service among stations attached to the network

    E.

     None of the above


  7. Which of the following medium is used for broadband local networks?

  8. A.

     Coaxial cable

    B.

     optic fiber

    C.

     CATV

    D.

     UTP

    E.

     None of the above


  9. In cyclic redundancy checking what is the CRC?

  10. A.

     the divisor

    B.

     the quotient

    C.

     the dividend

    D.

     the remainder

    E.

     None of the above


  11. What is the maximum number of entries in the HOSTS file?

  12. A.

     8

    B.

     255

    C.

     500

    D.

     Unlimited

    E.

     None of the above


  13. The communication mode that supports data in both directions at the same time is

  14. A.

     simplex

    B.

     half-duplex

    C.

     full-duplex

    D.

     multiplex

    E.

     None of the above


  15. Which of the following program is used to copy files to or from another UNIX timesharing system over a single link?

  16. A.

     VMTP

    B.

     TFTP

    C.

     UUCP

    D.

     UART

    E.

     None of the above


  17. One important characteristic of the hub architecture of ARC-net is

  18. A.

     directionalized transmission

    B.

     access control and addressing

    C.

     multiple virtual networks

    D.

     alternative routing

    E.

     None of the above


  19. The basic Ethernet design does not provide

  20. A.

     access control

    B.

     addressing

    C.

     automatic retransmission of a message

    D.

     multiple virtual networks

    E.

     None of the above