Download JNTUH MCA 4th Sem R13 2019 April-May 814AT Information Security Question Paper

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Code No: 814AT

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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Time: 3 Hours Max. Marks: 60

Note: This question paper contains two parts A and B.
Part A is compulsory which carries 20 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 8 marks and may have a, b, c as sub questions.

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PART - A 5 x 4 Marks = 20

1. What are the security services? [4]
2. Discuss the terms: Block ciphers and stream ciphers.
3. What are the design objectives for HMAC? Compare HMAC and CMAC.
4. Explain transport mode and tunnel mode in IPSec.

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5. Compare SSL and TLS.

PART - B 5 x 8 Marks = 40

1. a) Discuss about active attacks and passive attacks. [8]
   OR
   b) Explain the following:
   

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   a) Steganography b) Polyalphabetic cipher [4+4]
2. a) Explain RSA algorithm in detail with relevant diagrams. [8]
   OR
   b) Explain AES algorithm in detail. [8]
3. a) Describe HMAC algorithm: [8]
   

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   OR
   b) Explain Kerberos version 4 message exchanges for providing authentication. [8]
4. a) Explain the following related to S/MIME messages
   a) EnvelopedData.
   b) SignedData
   

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   c) ClearSigning
   d) RegistrationRequest
   e) Certificate-only Messages. [8]
   OR
   b) Give a brief note on Encapsulating security payload.
   

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   Discuss about different combinations of security associations. [4+4]
5. a) Discuss in detail the messages exchanged between client and server during the phase of SSL handshake protocol. [8]
   OR
   b) Discuss about virtual elections. [8]

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