Pondicherry University 2009 M.Tech Wireless Communication / High Performance Computer Networks - Question Paper
PONDICHERRY ENGINEERING COLLEGE, PONDICHERRY - 605 014 M. TECH. EXAMINATION (CBCS) JAN. 2010 (WIRELESS COMMUNICATION)
FIRST SEMESTER
EC 945 HIGH PERFORMANCE COMPUTING NETWORKS
Max. Marks: 60
Time: 3 Hours
PART-A
ANSWER ALL THE QUESTIONS (5x2= 10)
1. Determine the data rate of a Digitized voice signal with SNR of 48db, sampling rate of 8KHz and
number of bits per sample.
2. Define Efficiency of a Go Back N Protocol.
3. What is the significance of Sub netting?
4. List the parameters of the traffic defined by Generalized Cell Rate Algorithm.
5. Calculate the maximum fiber length ..gien that minimum received optical power Pr=-45dBm, Data
rate of lGbps, Attenuation Of 0.2Db/km ,Transmitter power Pt=lMw
PART-B
Answer five questions choosing one full question from each unit. (5 X 10= 50)
Unit-I
ain in detail various Multiplexing techniques of a basic network.
(Or)
7.With neat diagram, discuss various error control mechanisms in a network.
Unit-II
8.Describe how a packet with a given MAC destination address finds its way in a network of Ethernets connected by Bridges.
(Or)
.Illustrate the sequence of operations involved in Fiber Distributed Data Interface.
lO.Using Bellman Ford Algorithm, compute the length of the shortest path to the destination of a node from the source by choosing a network having not less than seven nodes.
(Or)
1 l.With neat diagram explain in detail IPv6 Header. Distinguish it from Ipv4.
Unit-IV
12.Using Link State algorithm , formulate a mathematical problem to compute source route in a Private Network-Network Interface.
(Or)
ist the techniques involved to combat ISI in a wireless network.
Unit-V
14.Consider an optical fiber propagating a beam of light .Suppose the power of beam launched into the fiber is P,. Calculate the receiver power Pt after travelling L km of fiber.
(Or)
15. With neat diagram explain in detail about Distributed Buffer.
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