OCR Creative iMedia (R093) - LO4.2.4

What is lossy compression?

• A method that removes data permanently to reduce file size.
• A method that increases file size.
• A reversible way of storing data.
• A way to encrypt files.

Answer explanation

Frame rate is measured in frames per second (fps).

Which of the following is an example of a lossless image format?

• .JPG
• .GIF
• .MP3
• .ZIP

Answer explanation

UHD (Ultra High Definition) is higher than HD.

Why is lossless compression preferred for text files?

• It increases colour range.
• It allows for audio playback.
• It reduces quality.
• It retains all original data.

Answer explanation

Higher frame rates make motion appear smoother.

Which file type uses lossy compression?

• .PNG
• .MP3
• .ZIP
• .TXT

Answer explanation

SD means Standard Definition.

What is a disadvantage of lossy compression?

• It takes up more storage.
• It slows processing.
• It reduces file quality permanently.
• It increases security risks.

Answer explanation

MP4 is a common compressed video format.

Which is a benefit of using lossy compression for web images?

• Better quality.
• Faster downloads due to smaller size.
• Easier to edit.
• Reversible compression.

Answer explanation

24 fps is a standard frame rate for cinematic video.

Which of the following is true about lossless compression?

• It permanently removes unnecessary data.
• It cannot be used for audio.
• It preserves the original file exactly.
• It only works for large files.

Answer explanation

GIF supports simple animations.

A user compresses a .WAV file to an .MP3. What compression type is used?

• Lossless.
• Encrypted.
• Uncompressed.
• Lossy.

Answer explanation

4K offers four times the resolution of HD.

Why would a graphic designer use lossless formats during editing?

• To remove unnecessary colour.
• To retain full image quality.
• To save hard disk space.
• To make printing faster.

Answer explanation

Uncompressed files are very large.

What happens to a file after lossy compression?

• The file can return to its exact original state.
• The data is temporarily lost.
• Some data is removed permanently.
• Only the file extension changes.

Answer explanation

Uncompressed AVI offers high quality, ideal for editing.