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Seat No.: Enrolment No.:
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER • EXAMINATION SUMMER 2018
Subject Code: 2360707 Date: 05-May-18
Subject Name: DATA COMPUTER COMMUNICATION
Time: 10:30 AM to 1:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1

Draw and Explain data communication model with neat diagram and list roles of each components involved in it.
07


Data communication model components


Explian OSI Model in detail.
07

OSI Model

Q.2

Compare Analog and Digital transmission.
07





List different guided media. Explain features of co-axial cables. Why co-axial cable is considered to be better choice than twisted pair cable?
07

Guided media Co-axial cables co-axial cables twisted pair cable


OR

Explain types of microwave communication with proper applications.
07

Microwave communication

Q.3

Explain STAR topology. List advantages and disadvantages of it.
Explain meaning of SIMPLEX Communication with example.
07


STAR topology
SIMPLEX Communication


Explain ASK.
07

ASK

OR
Q.3

Explain MESH topology. List advantages and disadvantages of it.
Explain meaning of FULL DUPLEX Communication with example.
07
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MESH topology
FULL DUPLEX Communication


Explain FSK.
07

FSK

Q.4

Explain frequency division multiplexing.
07


Frequency division multiplexing


Explain in detail CIRCUIT SWITCHING NETWORK
07

CIRCUIT SWITCHING NETWORK:

OR
Q.4

Explain time division multiplexing.
07


Time division multiplexing


Explain in detail PACKET SWITCHING NETWORK
07

PACKET SWITCHING NETWORK:

Q.5

Explain TCP/IP protocol suite in detail.
07


TCP/IP protocol suite


Explain PCM in detail
07

PCM

OR
Q.5

Write short note on ATM cell format
07


ATM cell format


Explain Delta Modulation in detail
07

Delta Modulation