Tribhuvan University
Bachelor of Science in Computer Science and Information Technology
Semester 7 · TU Board 2080
Course Title: Network Security (CSC416)
Full Marks: 60Pass Marks: 24Time: 3 hours
Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.
Group A
Attempt any TWO questions.(2 × 10 = 20)
- 1.10
What is S/MIME? Explain the functional flow of sender signing and encrypting message and receiver decrypting and verifying signature done in simplified S/MIME.
- 2.10
Explain about the features to be considered in mobile device security. What is internet key exchange and how does it work?
- 3.10
What is the gateway security in IoT? Describe the IoT security environment.
Group B
Attempt any EIGHT questions.(8 × 5 = 40)
- 4.5
Discuss different security standards.
- 5.5
Consider a network communication having users A and B. How mutual authentication between A and B is done using symmetric encryption.
- 6.5
What is identity federation? Discuss the federated identity operation.
- 7.5
Briefly define the parameters that define a TLS session state
- 8.5
How TLS handshake protocol works?
- 9.5
Briefly explain the threats to wireless network.
- 10.5
What is the use of firewall? Differentiate packet filtering firewall from stateful inspection firewall.
- 11.5
Describe the IPSec architecture.
- 12.5
What is use of DNSSEC? Describe the resource records for DNSSEC.
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