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

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R19 2021 July-August 863AE Information Security Previous Question Paper

R19

Code No: 863AE















2021

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, July/August - 2021

INFORMATION SECURITY

Time: 3 Hours













Max.Marks:75

Answer any five questions

All questions carry equal marks

- - -



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]


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.



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]


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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