FC0-U71 Tech Concepts and Terminology Practice Question
A digital image is stored in a file that retains all original data without any loss. Later, the file is compressed using a technique that discards some data to reduce file size, but the image quality is lower. Which type of compression was applied?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Lossy compression
Lossy compression permanently removes data to reduce file size, resulting in quality loss. Lossless compression retains all data. JPEG is a lossy format.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Archive compression
Why it's wrong here
Archive compression often uses lossless methods.
- ✗
Lossless compression
Why it's wrong here
Lossless compression does not discard data.
- ✗
File compression
Why it's wrong here
Too vague; all compression is file compression.
- ✓
Lossy compression
Why this is correct
Lossy compression discards data, reducing quality.
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Same concept, more angles
6 more ways this is tested on FC0-U71
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which of the following is an example of lossy compression?
medium- ✓ A.JPEG
- B.GIF
- C.PNG
- D.ZIP
Why A: Lossy compression reduces file size by permanently removing some data, as in JPEG and MP3.
Variation 2. A user wants to save a photo with the highest quality but does not care about file size. Which file format should they use?
medium- A.JPEG
- B.ZIP
- ✓ C.PNG
- D.MP3
Why C: Lossless formats like PNG preserve all data, while lossy formats like JPEG reduce quality for smaller size.
Variation 3. A user notices that a file saved as a JPEG is smaller than the original BMP file. Which type of compression does JPEG typically use?
medium- ✓ A.Lossy compression
- B.Run-length encoding
- C.Uncompressed
- D.Lossless compression
Why A: JPEG uses lossy compression, which discards some data to reduce file size.
Variation 4. Which of the following is an example of a lossy compression format?
medium- A.GIF
- B.PNG
- ✓ C.JPEG
- D.ZIP
Why C: JPEG is a lossy image compression format that discards some data to reduce file size.
Variation 5. A technician is explaining the difference between lossy and lossless compression to a colleague. Which of the following file formats uses lossy compression?
medium- A.GIF
- B.PNG
- ✓ C.JPEG
- D.ZIP
Why C: JPEG uses lossy compression, discarding some image data to reduce file size. ZIP, PNG, and GIF use lossless compression.
Variation 6. A graphic designer needs to save an image with high quality and no data loss. Which THREE file formats should the designer consider for lossless compression? (Select THREE.)
medium- ✓ A.TIFF
- ✓ B.ZIP
- ✓ C.PNG
- D.MP3
- E.JPEG
Why A: Lossless compression preserves all original data. PNG uses lossless compression for images, ZIP compresses files without loss, and TIFF can be stored uncompressed or with lossless compression.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U71 exam.