1.What is the difference of OS in terms of user's view and system's view?
User's view:
Operating system is designed mostly for ease of use.The operating system is designed mostly for ease of use, with some attention paid to performance, and none paid to resource utilization.
System View:
We can view an operating system as a resource allocator. The operating system acts as the manager of these resources.An operating system can also be viewed as a control program that manages the execution of user programs to prevent errors and improper use of the computer.