COMPUTER NETWORKING

MULTIMEDIA AND QUALITY OF SERVICE

COMPRESSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which type of compression would a program need to use?
A
Lossy compression
B
Lossless compression
C
Doesn’t matter. It can use either lossy or lossless compression.
D
None of the above
Explanation: 

Detailed explanation-1: -If data have been losslessly compressed, the original data can be recovered exactly from the compressed data. Lossless compression is generally used for applications that cannot tolerate any difference between the original and reconstructed data. Text compression is an important area for lossless compression.

Detailed explanation-2: -The most successful compressors are XM and GeCo. For eukaryotes XM is slightly better in compression ratio, though for sequences larger than 100 MB its computational requirements are impractical.

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