Download JNTUH MCA 4th Sem R13 2017 August 814AT Information Security Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 4th Sem (Fourth Semester) Regulation-R13 2017 August 814AT Information Security Previous Question Paper

R13

Code No: 814AT

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA IV Semester Examinations, August - 2017

INFORMATION SECURITY



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.



PART - A



















5 ? 4 Marks = 20



1.a) Define authentication, confidentiality, Non-repudiation, Availability.



[4]



b) Write a short note on Deffie Hellman Key Exchange Algorithm.



[4]

c)

What are the properties of Hash function in cryptography?





[4]

d)

Briefly discuss about the concept of combining security associations.



[4]

e) Write short notes on Password selection strategies and their significance.

[4]



PART - B

















5 ? 8 Marks = 40


2.

Compare and Contrast between Symmetric and Asymmetric key cryptography.

[8]

OR

3.

With a neat sketch explain the model for inter network security.





[8]


4.

With a neat diagram explain how does encryption and decryption techniques works for
DES.



















[8]

OR

5.

Perform encryption and decryption using RSA Alg. for the following. P=7; q=11; e=17;
M=8.



















[8]


6.

Give a neat sketch to explain the concept of HMAC.







[8]

OR

7.

Client machine C wants to communicate with server S. Explain how it can be achieved
through Kerberos protocol?













[8]













8.

How the messages are generated and transmitted in pretty good privacy (PGP) protocol?
Explain with clear diagrams.













[8]

OR

9.

Explain in detail about the various services provided in IPSec.





[8]


10.

With a neat diagram explain in detail about Secured Electronic Transactions (SET).[8]

OR

11.

List the characteristics of a good firewall implementation. How is circuit gateway different
from application gateway?













[8]



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