Assignment-1
Subject : Computer Network Security
Paper Code : BCA-601
Q-1 Write short note on:1. Security Attacks
2. Security Services
3. Security Mechanism
Q-2 Define:1.
2.
3.
4.
5.
6.
Plain Text
Cipher Text
Encryption
Decryption
Secret Key/ Private Key
Public Key
Q-3 what are the differences between:1. Symmetric Cryptography and Asymmetric Cryptography
2. Cryptography and Steganography
3. Cryptography and Cryptanalysis
Q-4 Explain the following security goals: Confidentiality, Integrity and Availability OR What
are different security goals.
Q-5 Explain the concept of Public Key Cryptography. Explain different ways of distributing
public and private keys in Public Key Cryptosystem.
Q-6 Write RSA algorithm. Given p=11, q=3, calculate e, d, private key and public key.
Q-7 Explain Digital Signature in detail.
Assignment-2
Subject : Computer Network Security
Paper Code : BCA-601
1. Explain Diffie-Hellman Key Exchange algorithm.
2. Define the following PGP services:
(i)
Authentication
(ii)
Confidentiality
(iii)
Compression
3. Explain the overview of Kerberos.
4. Discuss the X.509 Authentication service.
5. Explain the working of S/MIME
6. Write note on Kerberos and public key cryptography.