Download JNTUH MCA 3rd Sem R19 2021 July-August 863AE Information Security Question Paper

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Code No: 863AE R19

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA III Semester Examinations, July/August - 2021

INFORMATION SECURITY

Time: 3 Hours Max.Marks:75

Answer any five questions

All questions carry equal marks

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1. a) Describe the model for Network Security with a neat diagram.

   b) Explain about Block Cipher design principles. [8+7]

2. What are the basic requirements of Authentication? How the message is authenticated using secure hash algorithm (SHA-512)? [15]

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3. Describe the Kerberos security mechanism and explain why Kerberos is important for providing security in real time? [15]

4. What are the applications of IPSec? Explain about IPSec architecture with a neat sketch. [15]

5. a) What are the limitations of firewalls? Explain about Firewall design principles.

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   b) Explain various file access activities used for intrusion detection. [8+7]

6. a) Discuss about various kinds of security mechanisms in detail.

   b) Differentiate between Symmetric and Asymmetric key cryptography. [7+8]

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7. Explain RSA algorithm for encryption and decryption. Find n, d where p=11, q=3,and e = 3. Encrypt the message “MEET ME AFTER” using RSA. [15]

8. Explain the following

   a) S/MIME Functionalities

   b) Viruses and Worms. [7+8]

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