Chapter 7 Key Terms

What is Utility software?

• Software that is designed to optimise the performance of a computer system

• Software that compresses files and reduces the amount of space required for storage

• Software that prevents the system from becoming infected with malware

what is encryption?

• protecting the system by scrambling data to ensure it can't be accessed by an unauthorised user

• software that organises files

What is Antivirus protection?

• Software that is designed to optimise the performance of a computer system

• This prevents the system from being infected by malware

• Protecting the system by scrambling data

What is data compression?

• Software that is designed to optimise the performance of a computer system

• This compresses files and reduces the amount of space required for storage therefore helping to improve the memory available for the system to perform activities

• Protecting the system by downsizing data

What is Defragmentation?

• Software that is designed to optimise the performance of a computer system

• Organising the information in the system into clusters and places the most regularly used components into places where it is easily accessible

• Scrambling software to make it inaccessible

What is lossy compression?

• Organising the information in the system into clusters and places the most regularly used components into places where it is easily accessible

• This compresses files to a much smaller size, but will lose some of the data from the files which can't be recovered

• Creates duplicates of programs

What is Lossless compression?

• Compression of the files to a slightly reduced size

• Defragments programs

• compresses files into a larger size