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Posted By: Sree.... Member Level: Diamond Posted Date: 10 Jul 2008
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2006 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech NETWORK SECURITY AND CRYPTOGRAPHY Set No. 1 Question paper
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Code No: RR410504 Set No. 1
IV B.Tech I Semester Regular Examinations, November 2006
NETWORK SECURITY AND CRYPTOGRAPHY
(Computer Science & Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. Discuss in detail Simple-DES. [16M]
2. Explain the process of encryption and decryption in IDEA algorithm. [16M]
3. (a) Explain public key Crypto Systems. [6M]
(b) Explain in detail about Euclid’s Algorithm. [5M]
(c) Give a brief account on Random number Generation. [5M]
4. (a) Explain Chinese Remainder Theorem.
(b) Find all primitive roots of 7. [8+8]
5. (a) In what order should the signature function and the confidentiality function
be applied to message, and why?
(b) What are some threats associated with a direct digital signature scheme? [8+8]
6. (a) List limitations of SMTP/822 scheme?
(b) What are the MIME specifications? [8+8]
7. (a) What are the basic approaches to building SAs?
(b) What are the roles of the Oakley key determination protocol and ISAKMP in
IPSec? [6+10]
8. (a) what information used by a typical packet-filtering router?
(b) What are some weaknesses of a packet-filtering router?
(c) What is the difference between a packet-filtering router and a stateful inspec-
tion firewall? [8+4+4]
1 of 1
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