utility software explain, Schemes and Mind Maps of Computer science

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Unit 2

Technology Systems

Lesson Objective:

Today we are learning about

• (^) Utility Software

Utility Software

• (^) Many utilities come ready-loaded with the operating system in order allow the system to be optimised. Others can be purchased or are sometimes available for free as open source software.

Encryption Software

• (^) Encryption software disguises the contents of files so they can only be understood by authorised users. The software uses a complex algorithm to scramble the content so that it appears to be gibberish. Only authorised users can descramble the content.
• (^) The software can encrypt specified files, or the whole of the hard disk on which the files are stored.

Disc Defragmentation

• (^) Defragmentation software takes the fragmented files and rearranges the segments so that they run contiguously. This decreases read/write time, thereby speeding up computer performance.

Data Compression

• (^) Compression software reduces the size of a file stored on secondary storage.
• (^) Smaller files are easier to transmit across a network as they require fewer packets to be sent. Their reduced size also means more files can be stored in any given area of storage.

System information and

diagnosis

• (^) Other tools such as msconfig that displays diagnostic and troubleshooting information related to the operating system, hardware and software