Operating System Interview Questions

• Demand paging, page faults, replacement algorithms, thrashing, etc.
• Describe different job scheduling in operating systems.
• Difference :  Primary storage and secondary storage?
• Difference :  multi threading and multi tasking?
• Differentiate :  Complier and Interpreter?
• Differentiate :  RAM and ROM?
• Explain about paged segmentation and segment paging
• Explain briefly about, processor, assembler, compiler, loader, linker and functions executed by them.
• Explain difference :  microkernel and macro kernel.
• Give an example of microkernel.
• If two processes which shares same system memory and system clock in a distributed system, What is it called?
• What are basic functions of an operating system?
• What are difference phases of software development? Explain briefly?
• What are different functions of Syntax phase, Sheduler?
• What are different tasks of Lexical analysis?
• What are main difference :  Micro-Controller and Micro- Processor?
• What do you mean by deadlock?
• What is DRAM? In which form does it store data?
• What is a Real-Time System ?
• What is a mission critical system ?
• What is cache memory?
• What is hard disk and what is its purpose?
• What is multi tasking, multi programming, multi threading?
• What is software life cycle?
• What is difference :  Hard and Soft real-time systems ?
• What is important aspect of a real-time system ?
• What is state of processor, when a process is waiting for some event to occur?
• When would you choose bottom up methodology?
• When would you choose top down methodology?
• Which is best page replacement algorithm and Why? How much time is spent usually in each phases and why?
• While running DOS on a PC, which command would be used to duplicate entire diskette?
• Why paging is used ?
• Write a small dc shell script to find number of FF in design.

Operating System Interview Questions

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