Question

Which of the following is a type of substitution cipher?

(a) Mono alphabetic cipher

(b) transposition cipher

(c) transportation cipher

(d) transforming cipher

I had been asked this question in my homework.

This interesting question is from Cryptography in division Cryptography of Data Structures & Algorithms II

Answer 1

The correct choice is (a) Mono alphabetic cipher

Easy explanation - In substitution cipher the plain text is replaced by cipher text according to a fixed rule. There are two types of substitution cipher – Mono alphabetic and Poly alphabetic cipher.