Cochin University of Science and Techology (CUST) 2008 B.Tech Electronics and Communications Engineering computer networks(e ) - Question Paper

computer networks(June 2008)

1a. discuss the ISO-OSI reference model and the function of every layer
b. name any 3 physical transmission media. mention the maximum data transfer rate for every one
2a. briefly discuss the TCP/IP reference model, pointing out the functions of every layer
bi. with suitable example differentiate ranging from connection oriented and connection less services
ii. a noiseless channel is used for transmitting television signals. how many bits/second can be sent if 4-level digital signals are used? provided bandwidth=10MHz
3a. with an example define the sliding window protocol
b. discuss TDM and FDM
4a. briefly discuss the CSMA/CD protocol
b. define address resolution protocol
c. with a neat diagram discuss the fields in an Ethernet frame
5a. discuss the RIP protocol with a suitable example
b. define (i) DHCP (ii) ICMP
6a. with an example, discuss the OSPF protocol
b. Illustrate the IP diagram format and comment on every field
7a. what is UDP? discuss the segment structure
b. discuss the problems and remedies in TCP congestion control
8a. define TCP and illustrate the segment structure
b. discuss how a TCP connection is released
9a. discuss how simple mail transfer protocol is used to send an e-mail
b. provide the RSA algorithm. discuss with an example
10a.explain the SNMP protocol
b. define the subsequent (i) SSL (ii) RPC

Earning:   Approval pending.