What does is meant by the term software.

What is a single user operating system?

What is a multi-user operating system?

What is custom writen software?

What is open source software?

What is proprietary software?

Advantages of off-the-shelf software?

Disadvantages of off-the-shelf software?

What are 2 functions of an operating system?

Description of an antivirus?

Description of disk defragmentation?

Description of system clean-up?