NCEA Level 2 Digital Technologies Practice Questions - NCEA Level 2 Digital Technologies (NZQA Standards 91890-91899) Exam

How does a basic Caesar cipher encrypt plaintext messages?

It scrambles letter positions according to a random permutation grid. It substitutes each letter by swapping vowels and consonants. It shifts each letter in the alphabet by a fixed numerical offset. It converts characters into binary ASCII codes and performs an XOR operation.

Correct Answer:

It shifts each letter in the alphabet by a fixed numerical offset.

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