Q. is the art & science of cracking the cipher-text without knowing the key.
✅ Correct Answer: (B)
cryptanalysis
Information Cyber Security MCQs and Notes
Q. Conventional cryptography is also known as or symmetric-key encryption.
✅ Correct Answer: (A)
secret-key
Q. Cryptanalysis is used
✅ Correct Answer: (A)
to find some insecurity in a cryptographic scheme
Q. The procedure to add bits to the last block is termed as
✅ Correct Answer: (D)
padding
Q. In asymmetric key cryptography, the private key is kept by __________
✅ Correct Answer: (B)
receiver
Q. __is the practice of concealing a message within another message,image or file.
✅ Correct Answer: (A)
steganography
Q. The__is a polygraphic substitution cipher based on linear algebra.
✅ Correct Answer: (A)
hill cipher
Q. AES stands for?
✅ Correct Answer: (B)
advance encryption standard
Q. S/MIME is abbreviated as __________________
✅ Correct Answer: (D)
secure/multipurpose internet mail extensions
Q. In SSL, what is used for authenticating a message?
✅ Correct Answer: (B)
mac (message authentication code)