More advanced substitution ciphers use two or more alphabets, and are referred to as __________ substitutions.
A) multialphabetic
B) monoalphabetic
C) polyalphabetic
D) polynomic

Question

More advanced substitution ciphers use two or more alphabets, and are referred to as __________ substitutions.
A) multialphabetic
B) monoalphabetic 
C) polyalphabetic
D) polynomic

Quizplus · Accepted Answer

Multialphabetic substitutions would only use two alphabets, while polyalphabetic substitutions involve the use of multiple alphabets. Monoalphabetic refers to a cipher that only uses one alphabet. Polynomic is not a term commonly used in cryptography.

More Advanced Substitution Ciphers Use Two or More Alphabets, and Are