Operating System question and answer

43. What is process migration?
It is the transfer of sufficient amount of the state of process from one machine to the target machine.

44. What is mutant?
In Windows NT a mutant provides kernel mode or user mode mutual exclusion with the notion of ownership.

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

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

47. What are the possible threads a thread can have?

1. Ready
2. Standby
3. Running
4. Waiting
5. Transition
6. Terminated

48. 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.

49. What is Executive in Windows NT?
In Windows NT, executive refers to the operating system code that runs in kernel mode.

50. What are the sub-components of I/O manager in Windows NT?

1. Network redirector/ Server
2. Cache manager.
3. File systems
4. Network driver
5. Device driver