CS/B.TECH/CSE/SEM-6/CS-602/2013
2013
COMPUTER NETWORKS
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
(Multiple Choice Type Question)
1. Choose the correct alternatives for the following: 10 x 1 = 10
i) If the dataword is 111111 , the divisor is 1010 , the remainder is 110 , the CRC codeword is
a) 1111111010 b) 111111110
c) 1010110 d) 1101010 .
ii) In ……………………… ARQ, if a NAK is received, only the specified damaged or lost frame is transmitted.
a) Go-Back-N b) Selective Repeat
c) Stop-and-wait d) all of these.
iii) ……………………. is a collision free technique.
a) Token Passing b) CSMA
c) ALOHA d) CSMA/CD.
iv) Repeaters function in the …………………… layer.
a) Physical b) Data link
c) Network d) Transport.
