Answer in 4 short sentances no more

1) Describe the three categories of operating systems.

2) Describe the best known embedded moble operating systems.

3) what is the difference between software and application software?

4) what is application software? Give two examples.

5) what is a stroage area network?

6) Describe the basic distinguishing features of monitors that affect clarity including resolution, dot pitch, contract ratio, size and aspect.