The simplest type of stream cipher,one in which one letter or character is exchanged for another,is known as what?
A)shift
B)substitution
C)lock
D)loop

Question

Quizplus · Accepted Answer

The definition provided clearly indicates the type of cipher as a substitution cipher. A shift cipher only shifts letters by a fixed amount, whereas a substitution cipher replaces each character with another, which is the case here. Choice A, C, and D describe things that have no relevance to the question.

The Simplest Type of Stream Cipher,one in Which One Letter