Download JNTUH MCA 4th Sem R13 2018 January 814AT Information Security Question Paper

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Code No: 814AT

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA IV Semester Examinations, January - 2018

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

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5 x 4 Marks =20

1. What is cryptanalysis and cryptography? [4]
2. What are roles of public and private key? Specify the applications of the public key cryptosystem. [4]
3. What are the requirements for message authentication? [4]
4. Why does PGP generate a signature before applying compression? [4]

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5. What is IP address spoofing? [4]

PART -B

5 x 8 Marks =40

1. Explain Active attacks and Passive Attacks. OR Discuss the following: a) A model for internetwork security. b) Steganography. [4+4]
2. What is mono alphabetic cipher? How it is different from Caesar cipher? [4+4] OR Explain Blowfish in detail. [8]

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3. Discuss the following: a) Public-key Cryptography Principles b) RC4 Algorithm [4+4] OR Describe the authentication dialog used by Kerberos for obtaining services from another realm. [8]
4. Explain the X.509 authentication service. [8] OR How can the signed data entity of S/MIME be prepared? Explain the general format of PGP message. [4+4]
5. What do you mean by Security Association? Illustrate the parameters that identify the Security Association. OR Describe IP security Architecture. [4+4]
6. What is the importance of web security? Explain how secure socket layer provides the reliable service. [8] OR Explain statistical anomaly detection and rule based intrusion detection system. [8]

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