Reg No. 00000۸4651219000:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh Semester B.Tech Degree Examination (Regular and Supplementary), December 2020

Course Code: AE465
Course Name: INFORMATION SECURITY

Max. Marks: 100 Duration: 3 Hours
PART A
Answer any two full questions, each carries 15 marks. Marks
1 a) Explain the goals of security. (6)
b) Compare symmetric key encryption and asymmetric key encryption. (3)
c) Explain the models of PKI with neat diagrams. (6)
2 a) Explain the RSA algorithm. (8)
b) Whatis a malicious program? Give any two examples. (7)
3 8) Explain the methods used to protect security goals. (4)
b) What are the countermeasures against the vulnerabilities in information security? (4)
c) Explain the Diffie-Hellman key exchange. (7)
PART B
Answer any two full questions, each carries 15 marks.
4 a) Explain the SSL architecture with neat diagram. (7)
b) Explain IPSec cookies. (4)
c) Explain the two modes of operation of IPSec. (4)
5 a) Explain the four protocols used by SSL to accomplish its task. (8)
b) Explain the ESP protocol. (7)
6 a) Explain the authentication service exchange in Kerberos version4. (8)
b) What are the different fields in AH protocol? (5)
c) Compare AH and ESP. (2)
PART C
Answer any two full questions, each carries 20 marks.
7 a) Explain the function and the configuration of firewall. (10)
b) What are the security procedures in information security? (6)
c) Whatare the four phases of data recovery? (4)
8 a) Whatis IDS? What are the different types of IDS? (10)
b) What is managed security services and its types? (5)
c) Explain security audit. (5)
9 a) Whatare the functions of NAT? (5)
b) Explain the configuration of firewall. (5)
c) Whatare the security policies and procedures? (10)
RK

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