G9 Data Representation

Tick all that refer to the use of

Compression techniques

• reduce file size

• mostly used for sound, image, and video file types

• increase file size

• Lossy and lossless types

• remove error

To understand,

Tick all that describe LOSSY Compression

• Permanently removes data

• Recreates the file using the remaining data and uses algorithm to guess the removed content

• Uncompressed data is not the same as the original

• Does not remove data

To understand and describe,

Tick all how LOSSLESS compression compresses text file

• A compression algorithm is used such as RUN LENGTH ENCODING

• Repeating words, phrase, patterns are identified

• indexed with a number of occurrences with their position.

• Text and images are encrypted

it happens when the download speed is slower than the playback speed.

To EXPLAIN

The importance of compressing files are the following

• Increase download speed

• Data allowances are reduced

• Voice can be transmitted fast enough to keep up speech

• Data

  is

  increased

• reduces space on disk/servers