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101 · Question #322
101 Question #322: Real Exam Question with Answer & Explanation
The correct answer is C: Text files. HTTP compression works best on uncompressed text-based content; binary media files like video and audio are already compressed and yield little or no size reduction.
Question
Which three of these file types work well with HTTP compression? (Choose three.)
Options
- AMP4 videos
- BDigital photos
- CText files
- DStatic HTML Web pages
- ECD quality songs
- FMicrosoft Word documents
Explanation
HTTP compression works best on uncompressed text-based content; binary media files like video and audio are already compressed and yield little or no size reduction.
Common mistakes.
- A. MP4 video files use codecs such as H.264 or H.265 that already apply heavy perceptual compression, leaving virtually no redundancy for HTTP compression to exploit while adding CPU cost.
- B. Digital photos in JPEG or PNG format are already encoded with lossy or lossless compression algorithms, so applying HTTP compression yields negligible reduction and wastes processing resources.
- E. CD-quality audio in formats like WAV contains binary pulse-code modulation data with low textual redundancy, and compressed formats like MP3 have already eliminated the redundancy that compression targets.
Concept tested. HTTP compression suitability by content type
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