LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.C.A. DEGREE EXAMINATION - COMPUTER APPLICATIONS
FOURTH SEMESTER – APRIL 2008
DC 26
CA 4801 - COMPUTER NETWORKS
Date : 21/04/2008
Time : 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART–A
Answer all questions:
10 x 2 = 20
1. What is multiplexing? What are the types of multiplexing?
2. What is Piggy backing?
3. What is a LAN? Name the different topologies and transmission media used for LAN.
4. What are the key parameters of MAC.
5. What is an internetwork?
6. What is an ARP table?
7. What are the properties of transport protocol?
8. List the possible flags of TCP?
9. What is a frame? What are the different types of frames?
10. What are the different HTTP request operations?
PART-B
Answer all questions:
5 x 8 = 40
11.a. Explain the function of network adaptor.
(OR)
b. Explain the different classes of failure.
12.a. Explain the services of LLC.
(OR)
b. Explain Gigabit Ethernet.
13.a. Explain virtual circuit switching.
(OR)
b Explain distance vector routing in detail. Give the global view of the network
B
A
C
E
F
D
G
14.a. Explain the three way handshake algorithm.
(OR)
b. Explain RED congestion avoidance mechanism.
15.a. Explain how data are classified based on argument marshalling mechanism.
(OR)
b. Explain the function of SNMP.
PART-C
Answer any TWO of the following questions: by compulsorily choosing the Qus. No. 16
2 x 20 =40
16.a. Explain in detail the OSI architecture.
b. Explain the IEEE 802.3 10 Mbps specification.
17.a. Explain the spanning tree algorithm.
b. Explain the TCP state transition diagram.
18.a. Explain DES encryption algorithm for a single iteration.
b. Explain the loseless compression algorithm.
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