Interview Questions
Operating System
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What level of security does Windows NT meets? |
| Ans:
C2 level security. |
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What are the sub-components of I/O manager in Windows NT? |
| Ans:
1. Network redirector/ Server. 2. Cache manager. 3. File systems. 4. Network driver. 5. Device driver. |
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What is Executive in Windows NT? |
| Ans:
In Windows NT, executive refers to the operating system code that runs in kernel mode. |
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What are the possible threads a thread can have? |
| Ans:
1. Ready. 2. Standby. 3. Running. 4. Waiting. 5. Transition. 6. Terminated. |
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What is FtDisk? |
| Ans:
It is a fault tolerance disk driver for Windows NT. |
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What is an idle thread? |
| Ans:
The special thread a dispatcher will execute when no ready thread is found. |
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What is mutant? |
| Ans:
In Windows NT a mutant provides kernel mode or user mode mutual exclusion with the notion of ownership. |
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What is process migration? |
| Ans:
It is the transfer of sufficient amount of the state of process from one machine to the target machine. |
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What are the reasons for process suspension? |
| Ans:
1. Swapping. 2. Interactive user request. 3. Timing. 4. Parent process request. |
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List out some reasons for process termination? |
| Ans:
1. Normal completion. 2. Time limit exceeded. 3. Memory unavailable. 4. Bounds violation. 5. Protection error. 6. Arithmetic error. 7. Time overrun. 8. I/O failure. 9. Invalid instruction. 10. Privileged instruction. 11. Data misuse. 12. Operator or OS intervention. 13. Parent termination. |