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Thread: CS601 Data Communication Spring 2009 Final Term Paper

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    28 CS601 Data Communication Spring 2009 Final Term Paper

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    FINALTERM EXAMINATION
    Spring 2009
    CS601- Data Communication


    Question No: 1 ( Marks: 1 ) - Please choose one
    There are how many factors on which the performance of a network depends?


    ► Three
    ► Five
    ► Four
    ► Two



    Question No: 2 ( Marks: 1 ) - Please choose one
    _________requires the maximum number of I/O ports.


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    ► Bus
    ► Star
    ► Mesh
    ► Ring



    Question No: 3 ( Marks: 1 ) - Please choose one
    Headers are added at layers 1 and 7 of OSI model.


    ► True
    ► False

    Question No: 4 ( Marks: 1 ) - Please choose one
    Trailer is only added at ________layer of OSI model.


    ► data link
    ► physical
    ► network
    ► application

    Question No: 5 ( Marks: 1 ) - Please choose one
    A sine wave must be an analog signal.


    ► True
    ► False

    Question No: 6 ( Marks: 1 ) - Please choose one
    If there is __________in voltage then the frequency is infinite.


    ► instantaneous change
    ► continuous change
    ► no change



    Question No: 7 ( Marks: 1 ) - Please choose one
    The inversion of the level at 1 bit is called as __________

    ► NRZ-L
    ► NRZ-I
    ► RZ

    Question No: 8 ( Marks: 1 ) - Please choose one
    The last process in PCM is _________ digital data into digital signal.

    ► encoding
    ► decoding
    ► modulating

    Question No: 9 ( Marks: 1 ) - Please choose one
    Amplitude in ASK is more resistive to EMI and Noise.


    ► True
    ► False

    Question No: 10 ( Marks: 1 ) - Please choose one
    If FCC regulations are followed, the carrier frequencies of adjacent AM radio stations are ____________ apart.


    ► 5 KHz
    ► 10 KHz
    ► 200 KHz
    ► 530 KHz

    Question No: 11 ( Marks: 1 ) - Please choose one
    In _____________ transmission, a start bit and a stop bit frame a character byte.

    ► Asynchronous serial
    ► Synchronous serial
    ► Parallel
    ► Asynchronous & Synchronous serial

    Question No: 12 ( Marks: 1 ) - Please choose one
    Synchronous transmission have _____________.


    ► a start bit
    ► a stop bit
    ► gaps between bytes
    ► none of the given

    Question No: 13 ( Marks: 1 ) - Please choose one
    Transmission media are usually categorized as _____________


    ► Fixed or Unfixed
    ► Guided or Unguided
    ► Determinate or Indeterminate
    ► Metallic or Nonmetallic

    Question No: 14 ( Marks: 1 ) - Please choose one
    The RG number gives us information about ________.


    ► Twisted pairs
    ► Coaxial cables
    ► Optical fibers
    ► all of the given

    Question No: 15 ( Marks: 1 ) - Please choose one
    Radio wave and microwave frequencies range from _________.

    ► 3 to 300 KHz
    ► 300 KHz to300 KHz to 3 GHz
    ► 3 KHz to 300 GHz
    ► 3 KHz to 3000 GHz

    Question No: 16 ( Marks: 1 ) - Please choose one
    All of popular Fiber optic connectors are ___________ shaped.


    ► Conical
    ► Barrel
    ► Circular
    ► Rectangular



    Question No: 17 ( Marks: 1 ) - Please choose one
    In ______________ method a signal can be directed in a straight from Antenna to antenna.


    ► Line of sigh
    ► Ground propagation
    ► Sky propagation
    ► Microwaves



    Question No: 18 ( Marks: 1 ) - Please choose one
    Amplifiers are used to __________the signal to heat.


    ► Amplify
    ► Rectify
    ► Testify
    ► NUllify



    Question No: 19 ( Marks: 1 ) - Please choose one
    There are ________ basic categories of multiplexing.


    ► 3
    ► 4
    ► 2
    ► 5



    Question No: 20 ( Marks: 1 ) - Please choose one
    If a T-1 carries 8000 frames, the data rate is ___________


    ► 2.544 Mbps
    ► 1.544 Mbps
    ► 1.544 Kbps
    ► 1.544 Gbps

    Question No: 21 ( Marks: 1 ) - Please choose one
    FTTC stands for _____________


    ► flexible to the curb
    ► fiber to the curb
    ► fiber to the cable
    ► fiber to the center

    Question No: 22 ( Marks: 1 ) - Please choose one
    Optical signals are multiplexed using _________ at switching office to create wider BW optical signals

    ► WDM
    ► FDM
    ► TDM
    ► MUX



    Question No: 23 ( Marks: 1 ) - Please choose one
    Which error detection method consists of a parity bit for each unit as well as an entire data unit of parity bits?


    ► Simple parity check
    ► Two-dimensional parity check
    ► CRC
    ► Checksum



    Question No: 24 ( Marks: 1 ) - Please choose one
    If the ASCII character G is sent and the character D is received, what type of error is this?

    ► Single-bit
    ► Multiple-bit
    ► Burst
    ► Recoverable

    Question No: 25 ( Marks: 1 ) - Please choose one
    Flow control is needed to prevent ____________

    ► Bit errors
    ► Overflow of the sender buffer
    ► Overflow of the receiver buffer
    ► Collision between sender and receiver

    Question No: 26 ( Marks: 1 ) - Please choose one
    In data link layer, communication requires at least ___________ devices working together


    ► 3
    ►2
    ► 4
    ► 5


    Question No: 27 ( Marks: 1 ) - Please choose one
    Data link control is composed of ____________ important functions.


    ► 2
    ► 3
    ► 4
    ► 5

    Question No: 28 ( Marks: 1 ) - Please choose one
    Error control is both error _________ and error ___________


    ► detection; correction
    ► detection; deletion
    ► detection; avoidance
    ► detection; forwarding



    Question No: 29 ( Marks: 1 ) - Please choose one
    ENQ/ACK stands for______________


    ► Enquiry/ Acknowledgment
    ► Enque/ Acknowledgment
    ► Enquist/ Acknowledgment
    ► none of the given

    Question No: 30 ( Marks: 1 ) - Please choose one
    In __________ ARQ, if a NAK is received, only the specific damaged or lost frame is retransmitted.


    ► Stop-and-wait
    ► Go-Back-N
    ► Selective repeat
    ► Stop-and-wait & Go-back-N



    Question No: 31 ( Marks: 1 ) - Please choose one
    Sliding window requires that data frames be transmitted _______________


    ► Sequentially
    ► Frequently
    ► Synchronously
    ► Asynchronously



    Question No: 32 ( Marks: 1 ) - Please choose one
    Which of the following combines features of the other two.


    ► ZMODEM
    ► YMODEM
    ► XMODEM
    ► None of given

    Question No: 33 ( Marks: 1 ) - Please choose one
    BLAST stands for :


    ► Blocked asynchronous transmission
    ► Blocked synchronous transmission
    ► Barrel asynchronous transmission
    ► Below asynchronous transmission

    Question No: 34 ( Marks: 1 ) - Please choose one
    HDLC is an acronym for ______________.

    ► High-duplex line communication
    ► High-level data link control
    ► Half-duplex digital link combination
    ► Host double-level circuit

    Question No: 35 ( Marks: 1 ) - Please choose one
    The HDLC ___________ field defines the beginning and end of a frame.


    ► Flag
    ► Address
    ► Control
    ► FCS

    Question No: 36 ( Marks: 1 ) - Please choose one
    The shortest frame in HDLC protocol is usually the _________ frame.


    ► Information
    ► Supervisory
    ► Management
    ► None of the given



    Question No: 37 ( Marks: 1 ) - Please choose one
    The PDU has no flag fields, no CRC, and no station address


    ► TRUE
    ► FALSE

    Question No: 38 ( Marks: 1 ) - Please choose one
    _________ is the access protocol used by traditional Ethernet.


    ► CSMA/CD
    ► CSMA/CA
    ► Token Ring
    ► CSMA

    Question No: 39 ( Marks: 1 ) - Please choose one
    Repeater is an amplifier, not a regenerator.

    ► True
    ► False

    Question No: 40 ( Marks: 1 ) - Please choose one
    Bridges can divide a large ________ into smaller segments


    ► Network
    ► Packet
    ► Frame
    ► Address



    Question No: 41 ( Marks: 2 )
    Stop-and- wait ARQ has two control variables S and R. What are their functions? [2]
    Go-back-n ARQ
    Selective Reject ARQ

    Question No: 42 ( Marks: 2 )
    What's the name of the telephone service in which there is no need of dialing.

    Question No: 43 ( Marks: 2 )
    What is meant by Transmission Impairments?

    Question No: 44 ( Marks: 3 )
    How does the checksum checker know that the received data unit is undamaged? [3]

    Question No: 45 ( Marks: 3 )
    What is Geosynchronous satellite?
    .
    Question No: 46 ( Marks: 3 )
    Following abbreviations stands for?
    1. ARP
    2. RARP
    3. ICMP

    Question No: 47 ( Marks: 5 )
    Name and discuss briefly the bits in the HDLC control field. [5]

    Question No: 48 ( Marks: 5 )
    Describe method of checksum briefly?

    Question No: 49 ( Marks: 5 )
    What is satellite communication?

    Question No: 50 ( Marks: 10 )
    In how many ways TDM can be implemented? Describe any one with example.


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    28 Here are some more Unsolved Final Term Paper of CS601

    Unsolved Final Term Paper of CS601
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