JNTU
JNTU B.Tech III CRYPTOGRAPHY AND NETWORK SECURITY Previous Question Paper (February - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is Authentication?
Answer
Authentication is the security process of verifying the identity of an entity, such as a user, device, or system, ensuring that the entity is who they claim to be before granting access to resources.
What is cipher text?
Answer
Cipher text is the scrambled or unreadable form of data produced after applying an encryption algorithm to plaintext using a specific cryptographic key. It serves to protect the confidentiality of information during transmission or storage.
What is message authentication code?
Answer
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What elements of HTTPS are encrypted?
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What protocols comprise SSL?
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What are the principal services provided by PGP?
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What is DKIM?
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What are the different classes of Intruders?
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What is Honey pots?
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What is kerberos realm?
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Part B
List and briefly explain categories of security services and security mechanisms.
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Explain steganography and explain different possible types of attacks.
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Explain Diffie – Hellman key exchange.
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Explain RSA public key encryption algorithm.
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Explain X.509 certificates. Give its format.
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Explain digital signatures.
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Explain secure hash algorithm.
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Explain Transport layer security.
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Briefly define SSH protocols.
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Explain about IEEE 802.11 wireless LAN.
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Explain wireless security.
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Explain S/MIME.
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Explain Internet key exchange.
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Give IP security architecture.
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Explain anti-replay service in ESP.
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