MSCCS-11
December Examination 2016
MSCCS (Final) Examination
Data Communication and Networks
Paper MSCCS-11
Time 3 Hours Max. Marks 100
Note: The question paper is divided into three sections B and C. Write answers as per given instructions.
Section A 10 × 2 20
(Very Short Answer Questions)
Note: Answer all questions. As per the nature of the question delimit your answer in one word, one sentence or maximum upto 30 words. Each question carries 2 marks.
Give one difference between Analog and Digital transmission.
Give an example of Half Duplex mode of Communication.
Define Wavelength.
What is the need of Parity Bit?
What is port address?
Name some routing protocols.
What do you mean by frames?
673
MSCCS-11 300 3 (P.T.O.)
MSCCS-11 300 3 (Contd.)
673
(viii) Name any four guided media.
What is the use of PING command in ICMP?
Give an example of URL with its complete descriptions.
Section B 4 × 10 40
(Short Answer Questions)
Note: Answer any four questions. Each answer should not
exceed 200 words. Each question carries 10 marks.
What is Modem? How does it work? Explain.
What do you mean by Topology? Explain different types of
topologies with example.
Explain ARP (Address Resolution Protocol) and Reverse
Address Resolution Protocol.
What is Piggybacking? Explain its needs.
Explain the following modulation techniques:
Amplitude Modulation
Frequency Modulation
What is slow start mechanism? Explain how it plays a role in
congestion control.
Define TCP header format in detail.
Write short note on Domain Name System.
MSCCS-11 300 3
673
Section C 2 × 20 40
(Long Answer Questions)
Note: Answer any two questions. You have to delimit your each
answer maximum upto 500 words. Each question carries
20 marks.
10) Explain the working of Hubs, Bridges, Switches and Router.
11) With a flow diagram, explain the working of CSMA/CD.
12) Explain error detection and error correction with respect to
block coding. Find the codeword, using CRC given data word
"1001" and generator "1011".
13) Write short note on the following:
ATM (Asynchronous Transfer Mode Protocol)
Session Layer V/S Transport Layer