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1. Accept user requests and provide their resource requirements

2. Creates process and destroy them when they are no longer required

3. Control the progress of each process. That is, each logically enabled process makes progress and no process can block indefinitely the execution of other processes

4. Allocate hardware and software resources

5. Acts on exceptional conditions such as divided by zero etc.

6. Provides security, protection and access control of information

7. Maintain inter process communication and synchronization

8. Maintain statistics of resource usages and policies so that the system can be fine tuned for improve performance.

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