Download JNTUH MCA 4th Sem R15 2017 August 824AE Information Security Question Paper

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Code No: 824AE

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA IV Semester Examinations, August - 2017

INFORMATION SECURITY

Time: 3hrs Max.Marks:75

Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.

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PART - A

5 x 5 Marks = 25

1. a) Explain the need for computer security and describe various nature of attacks. [5]
2. b) Write a short note on the weaknesses of DES algorithm. [5]
3. c) Explain in detail the 0/1 Knapsack problem. [5]

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4. d) Write a short note on the functions provided by S/MIME. [5]
5. e) State and explain the various kinds of Firewalls. [5]

PART - B

5 x 10 Marks = 50

1. Explain in detail various principles of security. [10]

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   OR

2. a) Distinguish between symmetric and asymmetric encryption.

   b) Demonstrate substitution and transposition techniques with examples. [5+5]

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3. Explain in detail about Advanced Encryption Standard (AES) algorithm. [10]

   OR

4. a) Discuss the procedure involved in RSA public-key encryption algorithm along with its security issues.

   b) Illustrate Diffie-Hellman key exchange scheme with an example. [5+5]

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5. Explain the X.509 authentication services with a neat structure diagram. [10]

   OR

6. Explain in detail the Secure Hash Algorithm. [10]

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7. Define PGP and explain in detail the five principal services provided by PGP. [10]

8. Explain the scenario of IP Security with a neat diagram and list out the services provided by the IPSec at IP layer. [10]

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9. Explain in detail about various kinds of Viruses and Worms. [10]

10. List out the three categories of Intruders and with the help of a neat diagram explains the architecture of Distributed Intrusion Detection. [10]

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