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Computer Fundamentals :: Basic Computer Knowledge

  1.  The physical layer concerns with

  2. A.

    bit-by-bit delivery

    B.

    process to process delivery

    C.

    application to application delivery

    D.

    none of these

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  3.  The data link layer takes the packets from _____ and encapsulates them into frames for transmission.

  4. A.

    network layer

    B.

    physical layer

    C.

    transport layer

    D.

    application layer

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  5.  Header of a frame generally contains

  6. A.

    synchronization bytes

    B.

    addresses

    C.

    frame identifier

    D.

    all of these

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  7.  When 2 or more bits in a data unit has been changed during the transmission, the error is called

  8. A.

    random error

    B.

    burst error

    C.

    inverted error

    D.

    none of these

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  9.  CRC stands for

  10. A.

    cyclic redundancy check

    B.

    code repeat check

    C.

    code redundancy check

    D.

    cyclic repeat check

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  11.  Which one of the following is a data link protocol?

  12. A.

    ethernet

    B.

    point to point protocol

    C.

    HDLC

    D.

    all of these

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  13.  The technique of temporarily delaying outgoing outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called

  14. A.

    piggybacking

    B.

    cyclic redundancy check

    C.

    fletcher’s checksum

    D.

    none of these

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  15.  Which one of the following is a transport layer protocol used in internet?

  16. A.

    TCP

    B.

    UDP

    C.

    both (A) and (B)

    D.

    none of these

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  17.  User datagram protocol is called connectionless because

  18. A.

    all UDP packets are treated independently by transport layer

    B.

    it sends data as a stream of related packets

    C.

    both (A) and (B)

    D.

    none of these

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  19.  Transmission control protocol is

  20. A.

    connection oriented protocol

    B.

    uses a three way handshake to establish a connection

    C.

    recievs data from application as a single stream

    D.

    all of these

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