a (i) Define an operating system. (ii) State two functions of an operating system (iii) List two differences between an operating system and application sys...

a (i) Define an operating system.
    (ii) State two functions of an operating system
    (iii) List two differences between an operating system and application system software.

b Starting from the Save As dialogue box, outline the steps involved in passwording a document in a word processing package.