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Interview questions : OPERATING SYSTEM

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What is MUTEX ? What isthe difference between a 'thread' and a 'process'? What is INODE? Explain the working of Virtual Memory. How does Windows NT supports Multitasking? Explain the Unix Kernel. What is Concurrency? Expain with example Deadlock and Starvation. What are your solution strategies for "Dining Philosophers Problem" ? Explain Memory Partitioning, Paging, Segmentation. Explain Scheduling. Operating System Security. What is Semaphore? Explain the following file systems : NTFS, Macintosh(HPFS), FAT . What are the different process states? What is Marshalling? Define and explain COM? What is Marshalling? Difference - Loading and Linking ? What do you mean by deadlock? Explain the difference between microkernel and macro kernel. Give an example of microkernel. When would you choose bottom up methodology? When would you choose top down methodology? Write a small dc shell script to find number of FF in the design. Why paging is used ? Which is the best page replacement algorithm and Why? How much time is spent usually in each phases and why?

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