Image, sound and video data can be created in a number of file formats. In this context, which of the following are compressed file formats?

1.JPEG

2.MP3

3.MIDI

4.AVI

5.MP4

A1, 2 and 5 only ✓ Correct

B3, 4 and 5 only

C2, 3 and 4 only

D1 and 5 only

Correct answer: (A) 1, 2 and 5 only

Explanation

Compressed formats shrink file size, and Statement 1, Statement 2 and Statement 5 all apply compression.

JPEG in Statement 1 compresses photographs using lossy encoding.

MP3 in Statement 2 compresses audio by discarding inaudible detail.

MP4 in Statement 5 packs compressed video and audio into a compact container.

MIDI in Statement 3 stores note instructions, not compressed sound, so it does not belong.

AVI in Statement 4 is typically an uncompressed or lightly compressed container, unlike the compact MP4.

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