List the major activities of an operating system with respect to memory management, secondary storage management and process management.

Operating system is causes for following activities in associate with management of memory:

• Allocation and de-allocation of memory as and while needed
• Maintaining track of used and unused memory space.
• Deciding what process to be loaded in memory when space becomes available.

For a secondary space management:

• Swap and free space management
• Disk scheduling
• Assigned space for the programs and data to the secondary storage device.

For the process management:

• Creation, deletion of both system and user process.
• Handling the process synchronization.
• Deadlock the handling.