M.Sc. (Semester II) (CBCS) Examination Oct/Nov-2017
Computer Science
COMPUTER COMMUNICATION NETWORK
Day Date: Monday, 20-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Question No. 1 and 2 are compulsory.
Attempt any 3 questions from Q. no. 3 to Q. no. 7
Figures to the right indicate full marks.
Q.1 Choose correct alternatives. 10
Which topology requires a central controller or hub?
Mesh Star
Bus Ring
In the original ARPANET, were directly connected together.
IMPs Host computers
Networks Routers
The data link layer takes the packets from and
encapsulates them into frames for transmission.
Network layer Physical layer
Transport layer Application layer
Which one of the following task is not done by data link layer?
Framing Error control
Flow control Channel coding
The network layer concerns with
bits frames
packets none of the mentioned
Which one of the following is not a function of network layer?
Routing Inter-networking
Congestion control None of the mentioned
Transport layer aggregates data from different applications into a single
stream before passing it to
Network layer Data link layer
Application layer Physical layer
Which one of the following is a transport layer protocol used in internet?
TCP UDP
Both a and b None of the mentioned
Which one of the following allows a user at one site to establish a
connection to another site and then pass keystrokes from local host to
remote host?
HTTP FTP
TELNET None of the mentioned
Page 2 of 2
SLR-MG-293
10) Application layer protocol defines
Types of messages exchanged
Message format, syntax and semantic
Rules for when and how processes send and response to messages
All of the mentioned
Fill in the blanks:- 04
is the protocol suite for the current Internet.
CRC stands for
The lowest IP address is
Subnet of 194.24.0.8/22 is
Q.2 Solve the following:- 08
What is the CRC code of Frame 1 1 0 1 0 1 1 0 1 1 Using the generator
code 1 0 0 1 1.
Prefix Code of Given subnet: 255.255.0.0, 255.255.254.0, 255.255.255.0
and 255.0.0.0.
Write a short note 06
Jitter Control.
Piggybacking
Q.3 Answer the following.
Describe the OSI reference model of Computer network. 07
What is the principal of ICMP message? Explain the ARP. 07
Q.4 Answer the following.
What is sliding windows protocol? Explain one-bit sliding windows protocol. 07
What is computer network? Its applications. 07
Q.5 Answer the following.
What are the techniques for achieving good quality service? Explain any two
with a suitable example.
07
What is E-mail? Explain the architecture and services of E-mail. 07
Q.6 Answer the following.
In a figure A is the initial node and G is target node then calculate the shortest
path between A to G.
07
Write a note on Berkeley sockets and element of transport protocols. 07
Q.7 Answer the following.
Describe a simple protocol for a Noisy Channel. 07
What is the static web document? Explain how to use HTML in web
development.