COMPUTER NETWORKING

MULTIMEDIA AND QUALITY OF SERVICE

COMPRESSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Lossless compression does what?
A
Encrypts data
B
Re-codes data
C
Erases data
D
Replicates data
Explanation: 

Detailed explanation-1: -In lossless mode of JPEG, the first step is linear prediction, and then the compressed data is obtained by using Huffman coding and class code.

Detailed explanation-2: -Lossless compression is generally used for so-called “discrete” data, such as database records, spreadsheets, word-processing files, and even some kinds of image and video information. Text compression is a significant area for lossless compression.

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