Unix and Operation System

Q1. Describe briefly the different between multiprogramming and multitasking in a Windows environment.

Q2. When does page faults occur? Describe the actions taken by the operating system when a page fault occurs.

Q3. When virtual memory is implemented in a computing system there are certain costs associated with the technique and certain benefits. List the cost and the benefits. Is it possible for the cost to exceed the benefits? What measures can be taken to ensure that this does not happen?

Q4. Is disk scheduling, other than FCFS scheduling, useful in a single user environment? Explain your answer.