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DRIVE
SPRING
2017
PROGRAM
Master
of Science in Information Technology(MSc IT)
SEMESTER
2
SUBJECT
CODE & NAME
MIT209–
Data Communication and Networking
Assignment
Set - 1
1 Draw a diagram of OSI
reference model and describe the role of each OSI layer.
Answer: OSI
reference model
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 indicate the start and end of a frame. A serious problem occurs when binary
data like floating point numbers or object programs are transmitted. In such
cases For instance, use the two-character
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 a random
Assignment
Set - 2
1 Write a short note on the
following routing algorithm:
(a) Multi-destination
routing algorithm
(b) Flooding routing
algorithm
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
2 Explain TCP protocol with
suitable diagram.
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 methodology for
connecting the hosts, network and internet. The applications supported by
TCP/IP
3 Mention and describe the
different operations and responses with reference to Telnet protocol.
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 NVT keyboard to yhe NVT printer so that only completed lines
are sent from the client to the server. This provides the lowest common
denominator for terminal support, but it does not
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