Campus to Corporate Gateway-2

OPERATING SYSTEM BASICS
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1)Explain the basic architecture of OS(Kernal, shell, user apps etc)
2)The same above question can be asked to trace the OS flow for simple commands like "ls -l"
3)What is process?
4)What is thread ?
5)what are the differences b/w process and thread?
6)What are the different states of process?
7)Explain the basics of scheduling? May be by taking simple round robin algorithm
8)What are interrupts?
9)what are different types of IPC mechanism available in the OS?
10)Difference between mutex and semaphore?
11)What is deadlock and how do we can avoid it?
12)Small shell script writting..
13)What is real time operating system?
14)What is the OS you have used for academic projects and why only that?
15)what is the difference between virtual memory and physical memory ??