CS601 Final Term Solved Papers By Moaaz With Refrence

Question No: 1 ( Marks: 1 ) - Please choose

The inversion of the level at 1 bit is called as __________

► NRZ-L

► NRZ-I Page 73

► RZ

Question No: 2 ( Marks: 1 ) - Please choose

In selective-reject ARQ, only the specific damaged or lost frame is_____________.

► Retransmitted (Page 200)

► Forwarded

► Selected

► Rejected

Question No: 3 ( Marks: 1 ) - Please choose

YMODEM has _________Byte of data unit.

► 1024 Page 205

► 256

► 128

► 512

Question No: 4 ( Marks: 1 ) - Please choose

Which of the following sublyer, resolves the contention for the shared media

► MAC (Page 219)

► LLC

► Physical

Question No: 5 ( Marks: 1 ) - Please choose

Like 10 Base 5, 10 Base 2 is a _________ topology LAN

► Ring

► Mesh

► Star

► Bus (Page 227)

Question No: 6 ( Marks: 1 ) - Please choose

At the CRC generator, __________ added to the data unit after the division process

► 0s are (Page 176)

► 1s are

► The polynomial

► The CRC remainder is

Question No: 7 ( Marks: 1 ) - Please choose

Flow control is needed to prevent ___________.

► Bit errors

► Overflow of the sender buffer

► Overflow of the receiver buffer (Page 46)

► Collision between sender and receiver

Question No: 8 ( Marks: 1 ) - Please choose

In Y-MODEM Multiple files can be sent simultaneously

► True (Page 205)

► False

Question No: 9 ( Marks: 1 ) - Please choose

In 56K Modems Max Uploading speed is ______ bytes and downloading speed is

______ byte.

Ø 40K, 56K

Ø 33.6K, 56K (Page 117)

Ø 56K, 33.6K

Ø None of given

Question No: 10 ( Marks: 1 ) - Please choose

If db is amplified then attenuation is ------------------

Ø Positive (Page 142)

Ø Negative

Ø Zero

Ø None of the above

Question No: 11 ( Marks: 1 ) - Please choose

Amplifiers are used to __________the signal to heat.

Ø Amplify (Page 142)

Ø Rectify

Ø Testify

Ø Nullify

Question No: 12 ( Marks: 1 ) - Please choose

_________requires the maximum number of I/O ports.

Ø Bus

Ø Star

Ø Mesh (Page 29)

Question No: 13 ( Marks: 1 ) - Please choose

There are ________ basic categories of multiplexing.

Ø 3 (Page 148)

Ø 4

Ø 2

Ø 5

Question No: 14 ( Marks: 1 ) - Please choose

In _____________ transmission, bits are transmitted over a single wire, one at a time.

Ø Asynchronous serial

Ø Synchronous serial

Ø Parallel (Page 98)

Ø Asynchronous & Synchronous serial

Question No: 15 ( Marks: 1 ) - Please choose

In_____________ transmission, bits are transmitted over their own wires

Ø Asynchronous serial

Ø Synchronous serial

Ø Parallel

http://highered.mcgraw-hill.com/sites/0072515848/student_view0/chapter4/mixed_quiz.html

Ø Asynchronous & Synchronous serial

Question No: 16 ( Marks: 1 ) - Please choose

EIA 232 allows for a maximum bit rate of __________Kbps.

Ø 40

Ø 30

Ø 20 (Page 104)

Ø 10

Question No: 17 ( Marks: 1 ) - Please choose

In CRC the quotient at the sender _____________

Ø Becomes the dividend at the receiver

Ø Becomes the divisor at the receiver

Ø Is discarded

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