• Show understanding of how an OS can maximise the use of resources
• Describe the ways in which the user interface hides the complexities of the hardware from the user
• Show understanding of process management
  • The concept of multi-tasking and a process
  • The process states: running, ready and blocked
  • The need for scheduling and the function and benefits of different scheduling routines (including round robin, shortest job first, first come first served, shortest remaining time)
  • How the kernel of the OS acts as an interrupt handler and how interrupt handling is used to manage low-level scheduling
• Show understanding of virtual memory, paging and segmentation for memory management
  • The concepts of paging, virtual memory and segmentation
  • The difference between paging and segmentation
  • How pages can be replaced
  • How disk thrashing can occur