Interview Questions - Operating Systems

41.
What is an idle thread?
The special thread a dispatcher will execute when no ready thread is found.

42.
What is FtDisk?
It is a fault tolerance disk driver for Windows NT.

43.
What are the possible threads a thread can have?
  1. Ready
  2. Standby
  3. Running
  4. Waiting
  5. Transition
  6. Terminated

44.
What are rings in Windows NT?
Windows NT uses protection mechanism called rings provides by the process to implement separation between the user mode and kernel mode.