COMPUTER NETWORKING

MULTIMEDIA AND QUALITY OF SERVICE

COMPRESSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A JPEG file uses which type of compression?
A
WinZip
B
Lossy
C
Lzip
D
Lossless
Explanation: 

Detailed explanation-1: -Joint Photographic Expert Group (JPEG) files are compressed using lossy compression, which may result in the loss of relevant information. Generally, JPEG files are 8-bit color images, so any JPEG originating from a device with a higher bit depth will already be compressed by a reduction in dynamic range and bit depth.

Detailed explanation-2: -A JPEG file supports up to 24-bit color and uses lossy compression to compress images for more convenient storage and sending.

Detailed explanation-3: -Lossy compression refers to compression in which some of the data from the original file (JPEG) is lost. The process is irreversible, once you convert to lossy, you can’t go back. And the more you compress it, the more degradation occurs. JPEGs and GIFs are both lossy image formats.

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