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

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 4th Sem (Fourth Semester) Regulation-R15 2017 August 824AE Information Security Previous Question Paper

R15

Code No: 824AE















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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.



PART - A



















5 ? 5 Marks = 25



1.a) Explain the need for computer security and describe various nature of attacks.

[5]

b) Write a short note on the weaknesses of DES algorithm.







[5]

c) Explain in detail the 0/1 Knapsack problem.









[5]

d) Write a short note on the functions provided by S/MIME.





[5]

e) State and explain the various kinds of Firewalls.









[5]



PART - B

















5 ? 10 Marks = 50

2.

Explain in detail various principles of security.









[10]

OR

3.a)

Distinguish between symmetric and asymmetric encryption.

b)

Demonstrate substitution and transposition techniques with examples.



[5+5]


4.

Explain in detail about Advanced Encryption Standard (AES) algorithm.

[10]

OR

5.a)

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





b)

Illustrate Diffi-Hellman key exchange scheme with an example.





[5+5]


6.

Explain the X.509 authentication services with a neat structure diagram.

[10]

OR

7.

Explain in detail the Secure Hash Algorithm.









[10]



8.

Define PGP and explain in detail the five principal services provided by PGP.

[10]

OR

9.

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















[10]



10.

Explain in detail about various kinds of Viruses and Worms.





[10]

OR

11.

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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