BSc CS Sem 5 BSc CS Semester 5 (2019 2020) Oct 2020 INFORMATION TECHNOLOGY Question Paper - Mumbai University | munotes

Questions asked in this paper

• 2) Figures to the right indicate marks

1. Q3 Illustrations, in-depth answers and diagrams will be appreciated
2. Q4 Mixing of sub-questions is not allowed
3. Q1 Attempt All(Each of 5Marks) (15M)
   • (a) Multiple Choice Question
4. Q1 Message means that the data must arrive at the receiver exactly as it is
   • ii) Which one of the following is passive attack? ili) A firewall is specific form of a) router b) bridge c) Operating d)
   • v) DES is an acronym for. a) Data encryption Standard b) Digital encryption
   • (b) Fill in the blanks
   • i) data to be sent is ‘
   • (c) Short Answers 1). Define block cipher?
   • ii) What is Fiestel cipher?
   • iii) — List out any two virus countermeasures
   • iv) List out the functions used for rounds of AES?
   • v) Define Honeypot Attempt the following (Any THREE)(Each of 5Marks) (15M)
   • (a) List and explain different categories of security services
   • (b) Explain Vigenere cipher giving proper example
   • (c) Write an overview of DES algorithm
   • (d) Explain ECB model of operation of block cipher
   • (e) Explain Asymmetric cryptography with its application
   • (f) Define security attack. Explain its different types?
5. Q3 the following (Any THREE) (Each of 5Marks) (15M)
   • (a) Differentiate between stream cipher and block cipher
   • (b) Discuss MAC in detail
   • (c) Explain digital signature process
   • (d) Discuss Diffie Hellman key exchange process
   • (e) Write a short note on Kerberos
   • (f) Explain the concept of Digital Certificate in detail
6. Q4 Attempt the following (Any THREE) (Each of 5Marks) 15 marks
   • (a) Explain PGP with different services offered by it
   • (b) Discuss SSL handshaking protocol in detail
   • (c) Define Intrusion. Explain different approaches of Intrusion detection
   • (d) Define malicious software. Explain different types of viruses
   • (e) Explain capabilities and limitations of firewall
   • (f) Explain Secure Electronic Transaction Attempt the following (Any THREE) (Each of 5Marks) (15)
   • (a) Explain different aspects of Network security
   • (b) Explain different modes of operations of IPSec protocol
   • (c) Explain Man in middle attack
   • (d) Explain lifecycle of virus
   • (e) Encrypt NOTHING IS AS IT SEEMS and decrypt MKHSE LWYAE ATSOL

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