JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV INFORMATION SECURITY Previous Question Paper (December - 2019 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
(25 Marks)
Define Steganography.
Answer
Steganography is the art and science of hiding the existence of communication by embedding secret data within a non-secret carrier medium, such as an image, audio file, or text, so that an unintended observer is unaware that a hidden message is being transmitted.
Distinguish between Plain Text and Cipher Text.
Answer
Plain Text is the original, intelligible message or data that serves as the input to an encryption algorithm. Cipher Text is the scrambled, unintelligible output produced by the encryption algorithm after applying a specific key, designed to be unreadable by unauthorized parties.
List down the principles of Block Ciphers.
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Discuss about KDC.
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What is Biometric Authentication?
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Differentiate between HMAC and CMAC.
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What is Key Management?
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What is the purpose of combining Security Associations in IP security?
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What is Intrusion Detection?
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Write a short note on Password Management.
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Part B
(50 Marks)
Explain in detail the different principles of Security.
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State and explain:
Substitution Techniques
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Transposition Techniques.
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Explain in detail the Diffie-Hellman Key Exchange Mechanism with an example.
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Analyze the functioning of Blowfish algorithm using a C / Java program.
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Describe the Kerberos Security Mechanism and explain why it is important in real time for providing security.
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Explain in detail about Whirlpool Mechanism with an example.
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Explain in detail about the following:
PGP
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S/ MIME
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Explain in detail the architecture of IP Security with a neat diagram.
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Explain the following:
Viruses and Related Threats
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Secure Electronic Transaction.
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Write a detailed note on Virtual Elections.
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Enumerate Countermeasure for Viruses and Worms.
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