IGCSE Computer Science - Compression, File Formats & MIDI

A user takes an image and uses a program to make the file size of the image smaller.The image appears to look the same.

What has the program done?

• Transferred the file

• Compressed the file

• Corrected the file

• Deleted the file

Match the keyword to its meaning:

Compressed file

• No information is lost when compressed

• A file that takes up less space than the original file

• Information is lost when compressed

Match the keyword to its meaning:

Lossy compression

• No information is lost when compressed

• A file that takes up less space than the original file

• Information is lost when compressed

Match the keyword to its meaning:

Lossless compression

• No information is lost when compressed

• A file that takes up less space than the original file

• Information is lost when compressed

Indicate if this file format uses lossy compression, lossless compression or is uncompressed:

MPEG

• Lossy compression

• Losseless compression

• Uncompressed

Indicate if this file format uses lossy compression, lossless compression or is uncompressed:

JPEG

• Lossy compression

• Losseless compression

• Uncompressed

Indicate if this file format uses lossy compression, lossless compression or is uncompressed:

BMP

• Lossy compression

• Losseless compression

• Uncompressed

Indicate if this file format uses lossy compression, lossless compression or is uncompressed:

PNG

• Lossy compression

• Losseless compression

• Uncompressed

Indicate if this file format uses lossy compression, lossless compression or is uncompressed:

GIF

• Lossy compression

• Losseless compression

• Uncompressed

Indicate if this file format uses lossy compression, lossless compression or is uncompressed:

MP3

• Lossy compression

• Losseless compression

• Uncompressed