Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 4th Sem (Fourth Semester) Regulation-R17 2020 November 844AE Information Security Previous Question Paper
S OCT 2020
R17
Code No: 844AE
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA IV Semester Examinations, October/ November - 2020
INFORMATION SECURITY
Time: 2 Hours
Max.Marks:75
Answer any five questions
All questions carry equal marks
---
1.a) List and explain the security services.
b) Explain how Cipher Feedback mode can convert a block cipher to stream cipher. [7+8]
2.
Explain how a plain text block is encrypted using Blowfish algorithm.
[15]
3.a)
Perform encryption and decryption using RSA algorithm of the following. p=17; q=11;
used
e=7; M=88.
b) With a neat diagram explain how to transfer a message confidentially and at the same
time ensure integrity and authenticity.
[7+8]
4.a)
Explain KerberosV4 authentication dialogue in detail.
b)
What is the purpose of Digital certificates? Explain.
[7+8]
5.a)
Explain the fields of PGP User Public key Ring?
b)
Write down the applications of Authentication protocols.
[7+8]
6.a) List and describe the security services offered by S/MIME.
b)
What are the requirements of web security?
[7+8]
7.a)
Describe how e-transactions are secured.
b)
What is the purpose of SSL Change Cipher Specification protocol?
[7+8]
8.a)
List and explain different types of intruders.
b) Explain any two approaches of intrusion detection.
[7+8]
---oo0oo---
This post was last modified on 17 March 2023