Question

Caesar Cipher is an example of

(a) Poly-alphabetic Cipher

(b) Mono-alphabetic Cipher

(c) Multi-alphabetic Cipher

(d) Bi-alphabetic Cipher

This question was addressed to me in an online interview.

This interesting question is from Substitution and Transposition Techniques topic in chapter Classical Encryption Techniques of Cryptograph & Network Security

Answer 1

Right answer is (b) Mono-alphabetic Cipher

Easy explanation: Caesar Cipher is an example of Mono-alphabetic cipher, as single alphabets are encrypted or decrypted at a time.