Name of the College : Sphoorthy Engineering College
University : JNTUH
Department : Computer Science And Engineering
Subject Code/Name : R05310504/COMPUTER NETWORKS
Year : December 2011
Degree : B.Tech
Year/Sem : III/I
Website : sphoorthyengg.com
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/sphoorthyengg.com/4774-R05310504-COMPUTERNETWORKS.pdf
Computer Network Question Paper :
III B.Tech I Semester Examinations,December 2011
Common to Information Technology, Computer Science And Engineering
Related : Sphoorthy Engineering College R05312203 OOPS Through JAVA B.Tech Question Paper : www.pdfquestion.in/4758.html
Time: 3 hours
Max Marks: 80
Answer any FIVE Questions :
All Questions carry equal marks :
1. (a) Discuss the various kinds of supervisory frames in HDLC?
(b) Consider the operation of sliding window protocol using selective repeat over a 1-Mbps error-free line.
The maximum frame size is 1000 bits. New packets are generated about 1 second apart. The timeout interval is 10msec. If the special acknowledgement timer were eliminated, unnecessary timeouts would occur. How many times would the average be transmitted? [8+8]
2. (a) Explain how IP can be used over ATM?
(b) What are ATM service categories? [8+8]
3. (a) Explain Dijkstra’s shortest path algorithm.
(b) Consider graph given gure 1b. Compute the shortest path from A to D. [8+8]
4. (a) Compare point -to-point channels with broadcast channels along with suitable examples?
(b) A collection of ve routers is to be collected in a point-to-point subnet. Between each pair of routers, the designers may put a high speed line, a medium- speed line, a low-speed line, or no line.
If it takes 100ms of computer time to generate and inspect each topology, how long will it take to inspect all of them to nd the one that best matches the expected load? [8+8]
5. (a) What is multicasting? How IP supports multicasting?
(b) What is the advantage of exchanging exact path in BGP?
(c) Why BOOTP is preferred over RARP? [6+5+5]
6. (a) What are the components of SNMP management models? Explain?
(b) What is the signicance of abstract syntax notation?
(c) What are SNMP message types? [5+5+6]
7. (a) What is the prime dierence between a token bus and a token ring?
(b) A large population of ALOHA users manages to generate 50 requests/sec, including both originals and retransmissions. Time is slotted in the units of 40 msec.
i. What is the chance of success on the rst attempt?
ii. What is the probability of exactly k collisions and then a success?
iii. What is the expected number of transmission attempts needed? [4+12]
8. (a) Discuss various channels supported by ISDN bit pipe?
(b) Differentiate between virtual circuits and circuit switching? [8+8]
Code No: R05310504
R05 Set No. 4
1. (a) Discuss various channels supported by ISDN bit pipe?
(b) Differentiate between virtual circuits and circuit switching? [8+8]
2. (a) Explain how IP can be used over ATM?
(b) What are ATM service categories? [8+8]
3. (a) What are the components of SNMP management models? Explain?
(b) What is the significance of abstract syntax notation?
(c) What are SNMP message types? [5+5+6]
4. (a) Discuss the various kinds of supervisory frames in HDLC?
(b) Consider the operation of sliding window protocol using selective repeat over a 1-Mbps error-free line. The maximum frame size is 1000 bits. New packets are generated about 1 second apart.
The timeout interval is 10msec. If the special acknowledgement timer were eliminated, unnecessary timeouts would occur. How many times would the average be transmitted? [8+8]
5. (a) What is multicasting? How IP supports multicasting?
(b) What is the advantage of exchanging exact path in BGP?
(c) Why BOOTP is preferred over RARP? [6+5+5]
6. (a) Compare point -to-point channels with broadcast channels along with suitable examples?
(b) A collection of ve routers is to be collected in a point-to-point subnet. Between each pair of routers, the designers may put a high speed line, a medium speed line, a low-speed line, or no line. If it takes 100ms of computer time to generate and inspect each topology, how long will it take to inspect all of them to nd the one that best matches the expected load? [8+8]
7. (a) What is the prime dierence between a token bus and a token ring?
(b) A large population of ALOHA users manages to generate 50 requests/sec, including both originals and retransmissions. Time is slotted in the units of 40 msec.
i. What is the chance of success on the rst attempt?
ii. What is the probability of exactly k collisions and then a success?
iii. What is the expected number of transmission attempts needed? [4+12]
8. (a) Explain Dijkstra’s shortest path algorithm.
(b) Consider graph given gure 1b. Compute the shortest path from A to D. [8+8]