B.Sc. DEGREE EXAMINATION, NOVEMBER 2017.
Sixth Semester
Computer Science
COMPUTER NETWORKS
(CBCS 2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What are the components of a computer network
communication?
2. Name the network topologies.
3. What are the cables used in guided media?
4. What are the propagation methods available in wireless
transmission?
5. What are the duties of data link layer?
6. What is meant by burst error?
7. What is meant by multicasting?
8. What are the types of routing techniques present in
network layer?
9. What are the types of domain available in Internet?
10. What are the functions of Mail Transfer Agent
Sub. Code
1BCE6C1
AFC-10392
2
Ws20
Part B x 5 25)
Answer all questions, choosing either or
11. Explain the categories of Networks.
Or
Explain the network standards.
12. Describe about the fibre optic cable.
Or
Explain about the communication satellites.
13. Describe about sliding window protocol.
Or
Explain about the Ethernet.
14. Explain the multiplexing and demultiplexing
process in Transport Layer.
Or
Write the ports used by the transmission control
protocol.
15. Explain the components of cryptography.
Or
Describe about traditional ciphers in symmetric key
cryptography.
AFC-10392
3
Ws20
Part C x 10 30)
Answer any three questions.
16. Describe the reference models of the computer network.
17. Describe about the mobile telephone system.
18. Describe about the any two error detection methods.
19. Explain the User Datagram Protocol in detail.
20. Explain about the World Wide Web.
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