Computer Hacking Forensic Investigator (CHFI v10) — Question 183

What technique is used by JPEGs for compression?

Answer options

• A. ZIP
• B. TCD
• C. DCT
• D. TIFF-8

Correct answer: C

Explanation

The correct answer is C, DCT, which stands for Discrete Cosine Transform, a core component of JPEG compression that helps to reduce the amount of data needed to represent an image. Options A, B, and D do not relate to JPEG compression; ZIP is a compression method for files, TCD is not relevant in this context, and TIFF-8 refers to a different image format altogether.