University of Lucknow 2007 B.Tech Electronics and Communications Engineering DATA COMMUNICATION NETWORK - Question Paper

Q.1-ATTEMPT ANY FOUR.
(a)explain the relation b/w data rate & bandwidth.
(b)explain the synchronous data communication.
(c)compare the OSI & TCP reference moddel.
(d)why we use layered protocol.
(e)what is the use of bit stuffing in data?
(f)why do you mean by pipe lining?

Q.2-ATTEMPT ANY FOUR.
(a)what do you understand by medium access control?
(b)what are the major issue in allocating the channel?
(c)what do you understand by contention system?
(e)why do we prefect CSMA over ALOHA?
(f)explain the reservation protocol?

Q.3-ATTEMT ANY TWO.
(a)explain IEEE standard 802.3, 802.4 and 802.5 with the help of example?
(b)compare IEEE standard 802.3 , 802.4 and 802.5 with the help of diagram?
(c)explain various kinds of bridges?

Q.4-ATTEMT ANY TWO.
(a)compare Virtual circuit and Datagram Subnets in detail?
(b)explain in detail flooding.what do u understand by selective flooding?
(c)explain the network layer in the Internet?

Q.5-ATTEMPT ANY TWO.
(a)what are the various element of Transport Protocol?also discuss connection.
(b)explain TCP sugment Header ? and discuss TCP connection management ?
(c)explain Secret -Key Algorithm

submitted by -
upendra kumar sharma
B.tech(EC)8th sem. (R.B.S. College agra )

Earning:   Approval pending.