Total No. of Questions 18] [Total No. of Pages 2
M.Sc. DEGREE EXAMINATION, MAY 2018
First Year
INFORMATION TECHNOLOGY
Computer Networks
Time 3 Hours Maximum Marks 70
SECTION A × 15 45)
Answer any THREE questions from the following
Q1) Explain about frequency division, wave division and time division multiplexing in
detail.
Q2) What is Ethernet? Explain Fast Ethernet and Gigabit Ethernet.
What is channel allocation? How CSMA helps to solve problem?
Q3) Explain about packet switching and circuit switching.
Q4) Discuss about different routing protocols.
Q5) Explain about web security and email security.
SECTION B × 4 20)
Answer any five questions from the following
Q6) Write about differential Manchester encoding with suitable example.
Q7) What are the factors entered into selection of network topologies?
Q8) Describe the features of wireless networks.
Q9) Write about slotted ALOHA and reservation ALOHA.
Q10) What is bridge? Write short notes on bridges.
Q11) Write about IPv4 and subnets.
Q12) Write short notes on multicast routing.
Q13) Describe the features of file transfer protocol.
SECTION C × 1
Answer all questions
Q14) Define circuit mode access.
Q15) What mesh topology?
Q16) What is switch?
Q17) What is VLAN?
Q18) What is network threat?