Question

Route cipher is closely related to?

(a) Autokey cipher

(b) Hill cipher

(c) Rail fence cipher

(d) Columnar transposition cipher

I got this question in an online interview.

This intriguing question originated from Cryptography in section Cryptography of Data Structures & Algorithms II

Answer 1

Correct choice is (c) Rail fence cipher

Best explanation: Route cipher is closely related to rail fence cipher. In rail fence cipher the plain text is written in a zig zag fashion in a grid whereas in route cipher the plain text is written horizontally.