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Anna University
Question Paper Code : 11263
B.E./B.Tech. DEGREE EXAMINATION , NONEMBER/DECEMBER 2012
Seventh Semester
Electronics and Communication Engineering
CS 2060 / CS 807 / EC 1009 – HIGH SPED NETWORKS
(Common to Eighth Semester – Computer Science and Engineering)
(Regulation 2008)
(Common to PTCS High Speed Networks For B.E. (Part Time) Seventh Semester Electronics and Communication Engineering – (Regulation 2009))
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PART A – (10 X 2 = 20 marks)
1. Differentiate between frame relaying and X.25 packet switching service.
2. State the data link control functions provided by LAPF protocol.
3. List and explain the parameters for a single server queue.
4. What is meant by BECN?
5. State the mechanisms for supporting rate guarantees in GFR traffic.
6. What is meant by exponential RTO back off?
7. Give some applications that follow elastic traffic.
8. State the performance parameters that should be in the SLA for a DS document.
9. What is meant by soft state?
10. Explain label stacking in MPLS network.
PART B – (5 X 16 = 80 marks)
11. (a) (i) Explain the operation to AAL 1 and AAL ¾ with an example. (8)
(ii) Explain the working of an ATM error control algorithm. (8)
(Or)
(b) (i) Illustrate why CSMA/CD is not suitable for wireless LANs. (8)
(ii) Draw the 802.11 protocol stack and discuss the functions of PCF and DCF. (8)
12. (a) (i) Explain in detail the following congestion control techniques.
(1) Back pressure. (4)
(2) Choke packet. (4)
(3) Explicit congestion signalling. (4)
(ii) Explain the Kendall’s notation in detail. (4)
(Or)
(b) (i) Explain the single server queuing model and its applications. (8)
(ii) Explain about traffic rate management in frame relay networks. (8)
13. (a) (i) Explain about TCP window management in detail. (8)
(ii) Explain the RTF variance estimation using Jacobson’s algorithm in detail. (8)
(Or)
(b) (i) List and explain the ATM traffic parameter in detail. (8)
(ii) Explain the ATM ABR traffic management in detail. (8)
14. (a) (i) Explain the way in which ISA manages congestion and provides QOS transport. (8)
(ii) Explain hit round fair queuing technique in detail. (8)
(Or)
(b) Explain the differentiated services operation and the traffic conditioning functions in detail.
15. (a) (i) List and explain the three RSVP reservation styles in detail. (9)
(ii) Explain the MPLS operation in detail with a diagram. (7)
(Or)
(b) (i) Explain the RTP data transfer protocol architecture in detail. (8)
(ii) Explain the functions performed by the RTP control protocol and its packet types in detail.
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