NALANDA OPEN UNIVERSITY QUESTION, 2017, MCA, Part-I, Paper-IX (old) (Data Communication and Computer Networks)

NALANDA OPEN UNIVERSITY QUESTION, 2017, MCA, Part-I, Paper-IX (old) (Data Communication and Computer Networks)

NALANDA OPEN UNIVERSITY QUESTION, 2017, MCA, Part-I, Paper-IX (old) (Data Communication and Computer Networks)
                                                                               2017
                                                                       Full Marks: 80
                                                                        Time: 3 hours
                                        Answer any five questions . All questions carry equal marks.

1. Discuss all the layers of OSI model and their respective functionalities.

2. What is Transmission mode? Why it is used. Explain different types of Transmission mode with examples of each type.

3. Describe different type of topologies with diagram.  Give the advantages and disadvantages of each topology.

4. How data link layer different from transport. Discuss some protocols of transport layer.

5. What is routing? Describe all the routing algorithms and their advantages.

6. Describe different types of devices used for networking. Also state the OSI levels at which they are used.

7. Explain IPv4 header format in detail. Also describe the utility of each field in the format.

8. Explain the following with example:-
    (a) Sliding window protocol
    (b) Multiplexing

9. Discuss the hierarchy and addressing issues surrounding the construction of large Networks.

10. Write short notes on any Two of the following:-
      (a) Network security
      (b) FDDI
      (c) CRC
      (d) FTP

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