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Master of Science in Information Technology(MSc IT)



MIT209– Data Communication and Networking

Assignment Set - 1

1 What is meant by security in internet? Describe the four categories of network security
Network security consists of the policies and practices adopted to prevent and
monitor unauthorized access, misuse, modification, or denial of a computer network and
network-accessible resources. Network security involves the authorization of access to
data in a network

2 Explain the following:
a) Character stuffing
b) bit stuffing
Answer: a) Character stuffing
This method gets around the problem of synchronization after an error by having each frame start
and end with special bytes. This method operates on bytes. The special bytes are reserved
characters to

3 Explain the CSMA/CD protocol with suitable diagrams.
Answer: CSMA/CD Protocol
In computer networking, Carrier Sense Multiple Access with Collision Detection (CSMA/CD) is a
network control protocol in which a carrier sensing scheme is used. A transmitting data station that
detects another signal while transmitting a frame, stops transmitting that frame, transmits a jam
signal, and then waits for

Assignment Set - 2

1 Explain the following routing algorithm:
(a) Multidestination
(b) Flooding
Answer: a. Routing is the process of selecting a path for traffic in a network, or between or across
multiple networks. Routing is performed for many types of networks, including circuit-switched
networks, such as the public switched telephone network (PSTN), computer networks, such as the
Internet, as well as in networks used in public and private transportation, such as the system of
streets, roads, and

2 With the help of suitable diagram describe TCP protocol.
Answer: The TCP IP protocol suit can be considered as a major step stone for communication
network. Standards supported, flexibility and application supported, services provided for various
application from user end .The Transmission Control Protocol/Internet Protocol (TCP/IP) suite
Uses standard

3 Mention and explain the different operations and responses with reference to Telnet
Answer: There are four modes of operation for most Telnet clients and servers.
1. Half-duplex: This is the default mode, but rarely used today . The default NVT is a half duplex
device that requires a GO AHEAD (GA) from the server before accepting user input. The user input
is echoed locally from the Get fully solved assignment. Buy online from website
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