BSc IT Sem 5 Network Security Question Paper PDF 2026 - Mumbai University | munotes

Questions asked in this paper

1. Q1 Attempt any two of the following: 10 marks
   • a. and explain different types of criminal attacks. Give example of each one
   • b. with example different approaches to implement security model
   • c. Write a short note on phishing
   • d. Explain any two substitution techniques
2. Q2 Attempt any two of the following: 10 marks
   • a. How subkey is generated for rounds of IDEA algorithm?
   • b. different cryptography algorithm types. Explain with example
   • c. Explain double DES algorithm
   • d. Write the working of RC4 algorithm
3. Q3 Attempt any two of the following: 10 marks
   • a. Write a short note on digital signature
   • b. What is message authentication code? Write down disadvantages of hash-based
   • c. Differentiate between symmetric and asymmetric key cryptography
   • d. Write down difference between MD5 and SHA-1
4. Q4 Attempt any two of the following: 10 marks
   • a. How digital certificate is created
   • b. and explain PKIX services
   • c. What is the need of self-signed certificate needed?
   • d. Explain different mechanism for protecting private keys
5. Q5 any two of the following: 10 marks
   • a. List different email security protocols. Explain any one in detail Write a short note on electronic money
   • c. How handshake protocol works?
   • d. What is firewall? Explain different types of firewall
6. Q6 — Attempt any two of the following: 10 marks
   • a. How does Kerberos work?
   • b. is authentication token? Explain how it works. Also list different types of
   • c. any one security handshake mechanism Write the working of clear text password
7. Q7 Attempt any three of the following: 15 marks
   • a. What is virus? Write various phases of virus
   • c. Explain how MD5 works
   • d. Write down the difference between online certificate revocation status checks and
   • e. Differentiate between SSL and PLS
   • f. Write a short note on smart cards

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