B.Sc. (Computer Science) Sem 5 Information and Network Security Mar 2025 Question Paper - Mumbai University | munotes

Questions asked in this paper

• N.B. (1) All questions are compulsory. (2) Figures to the right indicate marks. (3) Illustrations, in-depth answers and diagrams will be appreciated. (4) Mixing of sub-questions is not allowed.

SECTION I - Q.1 (Attempt ANY FOUR from the following) 20 Marks

1. (a) Discuss the X.800 Security Services?
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2. (b) Write a short note on CIA Triad.
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3. (c) Explain Data Encryption Standard (DES) in detail.
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4. (d) Perform encryption and decryption using RSA Algorithm for the following. P=7; q=11; e=17; M=8
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5. (e) With the help of an example, explain the Play fair cipher.
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6. (f) Write a short note on Steganography.
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SECTION II - Q.2 (Attempt ANY FOUR from the following) 20 Marks

1. (a) Explain Diffie-Hellman Key Exchange.
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2. (b) Write a short note on the MD5 algorithm.
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3. (c) What is Digital Signature? How does it work?
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4. (d) Discuss the X.509 Certificate format.
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5. (e) State and explain any five applications of Cryptographic Hash Functions.
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6. (f) Write a short note on Public Key Distribution.
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SECTION III - Q.3 (Attempt ANY FOUR from the following) 20 Marks

1. (a) Explain the concepts and techniques of Intrusion Detection Systems.
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2. (b) Explain Distributed Denial of Service.
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3. (c) Write a short note on Secure Electronic Transaction.
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4. (d) Explain the role of AH (Authentication Header) and ESP (Encapsulating Security Payload) in IPSec.
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5. (e) Discuss different types of firewalls used in network security.
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6. (f) Write a short note on SSL.
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SECTION IV - Q.4 (Attempt ANY FIVE from the following) 15 Marks

1. (a) Explain the following types of attacks: i) Impersonation ii) Espionage iii) Eavesdropping
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2. (b) What is Kerberos? Explain in brief.
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3. (c) What is Virus? Describe different types of Viruses.
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4. (d) Explain the concept of Electronic Code Book (ECB).
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5. (e) Explain SHA in brief.
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6. (f) Define the role of honeypots.
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