GIAC Security Essentials Certification (GSEC) — Question 4

Which of the following is a characteristic of hash operations?

Answer options

• A. Asymmetric
• B. Non-reversible
• C. Symmetric
• D. Variable length output

Correct answer: D

Explanation

The correct answer is D because hash operations produce outputs of varying lengths depending on the input data. Options A and C describe types of cryptographic algorithms, while B, while true for hash functions, does not capture the unique feature of variable output length.