List of top Data Science A.I Cyber Security and Computer Sci. Questions on Cryptography & Network Security asked in CUET (PG)

Match List - I with List - II.

List - I		List - II
A.	Caesar Cipher	I.	Substitution cipher using \(5 \times 5\) matrix
B.	Playfair Cipher	II.	Polyalphabetic cipher using matrix multiplication
C.	Hill Cipher	III.	Monoalphabetic cipher using fixed shift
D.	Vigenère Cipher	IV.	Polyalphabetic cipher using keyword repetition

Choose the correct answer from the options given below:

Consider the following statements about symmetric encryption :
A. Same key for encryption and decryption

B. Faster than asymmetric encryption

C. Key distribution is simpler

D. Stream ciphers encrypt one bit byte at a time

E. Block ciphers operate on groups of bits

Choose the correct answer from the options given below :

The attributes in IPsec for Authentication Header protocol in transport mode from left to right are :
A. IPsec header
B. Padding
C. Authentication header
D. Rest of original packet
Choose the correct answer from the options given below :

Which of the following statement correctly differentiates substitution and transposition ciphers ?

In a secure communication model, if an attacker intercepts a message and replaces it with a fake one before forwarding it, this attack is best classified as :

Which type of firewall filters is based on application - layer data such as URL and HTTP headers ?

Which is not a requirement of digital signatures:

Rail fence technique is an example of:

In the DES algorithm, the round input is 32 bits, which is expanded to 48 bits via:

The best-known multiple-letter encryption cipher is:

Computation of the discrete logarithm is the basis of the cryptographic system:

In which theorem \(a^{p−1} = 1 \) mod p where p is prime and a is a positive integer not divisible by p