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Drive Summer – 2017
PROGRAM Bachelor of Science in Information Technology
SEMESTER II
SUBJECT CODE & NAME BIT205 – Basics of Data
Communication
Assignment Set -1
1 What are communication
model?
Answer: Data communication model:
The figure below shows the
simple model of data communication.
2 What is the need for Protocol
Architecture?
Answer: The architecture of the TCP
/ IP protocol is the result of protocol development and experimental
packet-switched networks, Apa, developed by the US Department of Defense’s
Advanced Research Projects Agency (DARPA), and is commonly referred to as the
TCP / IP protocol suite. The protocol suite contains a number of protocols,
which have been adopted by the Internet
3 Write short notes on Pulse
Code Modulation (PCM).
Answer: Pulse Code Modulation
Pulse code modulation (PCM) is based on the sampling theorem.
Sampling Theorem: It states that “If a signal
f(t) is sampled at regular intervals of time and at a rate higher
than twice the highest signal frequency, then the samples contain all the
information of the
Assignment Set -2
1 What are the criteria for a
Data Communication Network?
Answer: Communication Network is set of equipment or say facilities that provide
a communication services like to transfer of data between two or more nodes located
in any of its geographical point. Example of such networks includes computer
networks (LAN/WAN), telephone networks, television broadcasting networks,
cellular networks etc.
Radio and
2 Explain the TCP/IP Protocol
Architecture.
Answer: Two protocol architectures
have served as the basis for the development of interoperable communications
standards: the TCP/IP protocol suite and the Open Systems Interconnection (OSI)
reference model. TCP/IP is the most widely used interoperable architecture, and
has won the "protocol wars." Although some useful standards have been
developed in the
3 Write short notes on Delta
Modulation (DM).
Answer: Delta Modulation (DM)
In delta modulation, an analog input is approximated by a staircase
function that moves up or down by one quantization level ᵟ at each sampling
interval (TS). An example is shown in figure below, where the staircase
function
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