cpe102p

5. A computer component that define the ways in which the system resources are used to solve the computing problems of the user.
6. Device controller transfer blocks of data from buffer storage directly to main memory without CPU intervention.
7. It is the one program running at all times on the computer.
10. It loads operating system kernel and starts execution.
13. CPUs are independent of one another, but each has access to the operating system.
16. It is a software-generated interrupt caused either by an error or a user request.
18. It determines how to do something.
19. The only large storage that the CPU can access directly.
20. It is a logical extension in which CPU switches jobs so that users can interact with each job while it is running.

1. It provides a convenient environment for program development and execution.
2. Copying information into faster storage system.
3. Computations can be dispersed among several processors.
4. It presents guest with system similar but not identical to hardware.
8. It treats hardware and the operating system kernel as though they were all hardware.
9. It is passive entity.
11. Programming interface to the services provided by the OS.
12. It states that Debugging is twice as hard as writing the code in the first place.
14. It controls who can use the system and how.
15. It provides a convenient way for users to share resources
17. Any mechanism for controlling access of processes or users to resources defined by the OS.