Download JNTUA M.Tech 2nd Sem Supply 2018 Feb 9D08205 Cryptography And Network Security Question Paper

M.Tech II Semester Supplementary Examinations February 2018

CRYPTOGRAPHY & NETWORK SECURITY

(Computer Networks)

(For students admitted in 2012, 2013, 2014, 2015 & 2016 only)

Max. Marks: 60

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Answer any FIVE questions

All questions carry equal marks

1. (a) What is an attack? List the types of attacks. Briefly describe the classification of attacks.
   (b) Define various mathematical tools for cryptography in details.
2. Explain the process of encryption and decryption in DES (Data encryption standard) algorithm.

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3. (a) Define digital signature. Explain its role in network security.
   (b) Illustrate with an example the process involved in RSA algorithm.
4. (a) Define and explain various user authentication protocols.
   (b) Give the complete clarity among HMAC and CMAC.
5. (a) Explain the digital signature algorithm with an example.
   

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   (b) What is public key infrastructure? How PKI is managed in India?
6. Explain security handshake pitfalls in detail.
7. (a) Explain the operational description of (pretty good privacy) PGP.
   (b) Explain X.509 authentication service.
8. (a) Explain the intrusion detection tool audit records.
   

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   (b) List and briefly define four techniques used to avoid guessable password.

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