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

What is the primary difference between encryption and cryptographic hashing?

Encryption produces variable output lengths whereas hashing always produces short numbers. Encryption requires internet connectivity whereas hashing works offline. Encryption can only process plain text whereas hashing works on binary files. Encryption is a two-way process (reversible), whereas hashing is a one-way process (irreversible).

Correct Answer:

Encryption is a two-way process (reversible), whereas hashing is a one-way process (irreversible).

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