Andhra University 2008 B.E Electronics & Tele-Communication Engineering Network Engineering - Question Paper

ques. No.1 is compulsory and ans any other $ ques.
All ques. carry equal marks
Time :3hrs Maximuum:70marks

1)
a) elaborate sockets in a transport layer?
b)explain hamma distance
c)what is link state protocol
d)what is flooding?
e)what is datagram?
f)what is adaptive tree protocol?
g)Draw the header part of TCP protocols

2)
a)List advantages and disadvantages of having International standards for network protocols
b)why was SMPS designed as a connectionless network and frame relay as a connection oriented one

3)
a)compare the working of demodulator part of a modem and the codes part of cedes
b)explain bus, star and ring topologies with their advantages and disadvantages

4)
a)Explain CSMA/CD sending and receiving algorithms
b)what are the problems of Data link layer? explain 1 bit sliding window protocol

5)
a)Explain briefly the fault detection and correction techniques used in data link layer
b)show the various fields of an ethernet frame and discuss 802.3 MAC sublayer protocol

6)
a)explain secret key and public key algorithms in application layer
b)write the features of SMTP protocol and explain the architecture of e-mail system

7)a)Explain how crash recovery is achieved in transport layer
b)Describe the token bucket algorith for congestion control

8)write short notes on any three of the subsequent
a)ALOHA protocol
b)FTP
c)protocols and their performance
d)FDDI

Earning:   Approval pending.