Exam Details

Subject data communication and networking
Paper
Exam / Course m.c.a
Department
Organization Mizoram University
Position
Exam Date 2018
City, State mizoram,


Question Paper

III/MCA/302
Professional Course Examination, November 2018
3rd Semester
MASTER OF COMPUTER APPLICATIONS
Course MCA-302
Data Communication and Networking
Revised
Full Marks 60
Time 3 hours
The figures in the margin indicate full marks for the questions
Answer Q. No. 1 and any four from the rest
1. Write short notes on the following 2×6=12
Multipoint connection
Nyquist bit rate
Fiber optics
Fixed-size framing
Internet protocol
Firewalls
2. Explain OSI referential model in detail. 8
What are the different transmission impairments? 4
/425 1 Contd.
3. Describe analog and digital data and signals. What are composite and
periodic signals?
Describe Pulse Code Modulation giving example. 4
4. Explain bipolar line coding scheme for digital-to-digital conversion. 4
Why do we need to convert digital signal to analog? Explain ASK and
FSK in detail.
5. What is multiplexing? Write notes on unguided transmission media.

What do you mean by error detection and correction? Explain the
working principles of CRC giving example.
6. Explain the concept of stop-and-wait ARQ giving suitable example. 4
What is channelization? Explain FDMA and TDMA.
7. What is routing in networking? Explain the different routing
algorithms in detail.
What is the difference between ALOHA and CSMA? 4
8. What is DNS and how does it work? 5
What is cryptography? Explain the concept of symmetric encryption
algorithms.


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