HIGH PERFORMANCE COMPUTER NETWORKS.pdf - Google Drive
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HIGH PERFORMANCE COMPUTER NETWORKS.pdf - Google Drive
Page 1 of 2. JUP â 151. Second Semester M.E. (Electronics & Communications) Degree. Examination, January/February
JUP – 151
*JUP151*
Second Semester M.E. (Electronics & Communications) Degree Examination, January/February 2014 (2K9 Scheme) EL 211 : HIGH PERFORMANCE COMPUTER NETWORKS Time : 3 Hours
Max. Marks : 100
Instruction : Answer any five full questions. 1. a) Discuss any three typical applications of Wireless Networks in Health care domain.
6
b) Differentiate between Internet, Intranet and Extranet.
6
c) Define Network topology. With a neat diagram discuss the basic principles and characteristics of various network topologies.
8
2. a) A system has an n-layer protocol hierarchy. Applications generate messages of length M bytes. At each of the layers, an h-byte header is added. What fraction of the network bandwidth is filled with headers ?
6
b) Discuss with relevant specifications IEEE 802.2, IEEE 802.3 and IEEE 802.3 protocols.
8
c) Discuss various design principles used for router design.
6
3. a) A noiseless 4-kHz channel is sampled every 1 msec. What is the maximum data rate ? How does the maximum data rate change if the channel is noisy, with a signal-to-noise ratio of 30 dB ?
6
b) Give the purpose of Multiplexing in Networks. Discuss different categories of multiplexing.
6
c) Explain in detail the working of CSMA/CD protocol.
8
4. a) A slotted ALOHA network transmits 200-bit frames using a shared channel with a 200-kbps bandwidth. Find the throughput if the system (all stations together) produces a) 1000 frames per second b) 500 frames per second c) 250 frames per second.
6
b) Briefly discuss various types of controlled media access.
8
c) With a diagram explain IEEE standard for Local Area Network.
6 P.T.O.
JUP – 151
-2-
*JUP151*
5. a) What is Network Operating System ? Discuss various services offered by Network Operating Systems.
6
b) What are the various advantageous of layered approach for network protocol design ?
6
c) Compare ISO/OSI protocol stack with TCP/IP protocol stack.
8
6. a) With a neat header format, give the significance of every field in the IPv4 header.
6
b) Your company has the network ID 165.121.0.0. You are responsible for creating subnets on the network, and each subnet must provide at least 900 host IDs. What subnet mask meets the requirement for the minimum number of host IDs and provides the greatest number of subnets ?
6
c) Discuss three way handshaking of TCP, and three protocol scenarios which happens during connection establishment.
8
7. a) Given the network below and using the metrics shown on the links as the basis for optimality, sketch the shortest path from A to J using Dijkstra’s algorithm.
6
b) What is ARP ? Explain the purpose and use of ARP protocol.
6
c) With necessary block diagrams explain the working of HTTP protocol.
8
8. a) You are hired to design a reliable byte-stream protocol that uses a sliding window (like TCP). This protocol will run over a 1-Gbps network. The RTT of the network is 140 ms, and the maximum segment lifetime is 60 seconds. How many bits would you include in the AdvertisedWindow and SequenceNum fields of the protocol header ?
6
b) What is Network Management ? Discuss the use of SNMP in network management.
6
c) What are adaptive protocols ? How useful adaptive protocols in implementing QoS in High Performance Computing Networks ?
