COMPUTER NETWORKS (CN) MAY 2013 SEMESTER 5
Con. 7273-13. GS-8997
(3 Hours) [Total Marks : 80]
N.B. : (1) Question No. 1 is compulsory.
(2) Attempt any four questions out of remaining six questions.
(3) Assume suitable data wherever required.
| 1. (a) | What is the need for layering ? Discuss the design issues for layers. | 10 |
| (b) | Explain the ALOHA protocol. Compare the performance of Pure Aloha v/s Slatted | 10 |
| Aloha at low load and high load. | ||
| 2. (a) | Explain different framing methods. What are the advantages at variable length | 10 |
| frames over fixed length frames ? | ||
| (b) | Explain : FDMA, TDMA and CDMA. | 10 |
3. (a) | Explain sliding windows protocol with selective repeat. | 10 |
| (b) | Explain with the suitable example CRC algorithm for computing checksum. | 10 |
4. (a) | What are transport service primitive ? | 10 |
| (b) | How TCP controls the congestion, explain in detail. | 10 |
5. (a) | Differentiate between the following :- | 10 |
| (i) Protocol and Interface | ||
| (ii) Connectionless and connection oriented service. | ||
| (b) | What are different types of routing ? Explain any one in detail. | 10 |
6. (a) | Explain the different factors associated with quality of service in inter network. | 10 |
| (b) | Describe the IPV4 header format in detail. | 10 |
7. | Write short notes on (any four):- | 20 |
| (a) SONET | ||
| (b) Layer 2 v/s Layer 3 switching | ||
| (c) Bluetooth | ||
| (d) CIDR | ||
| (e) Berkely Socket. |
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