Frequently Asked Questions - Operating System Concepts

* 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 are the basic functions of an operating system?

* Explain briefly about, processor, assembler, compiler, loader, linker and the functions executed by them.

* What are the difference phases of software development? Explain briefly?


* Differentiate between RAM and ROM?


* What is DRAM? In which form does it store data?


* What is cache memory?


* What is hard disk and what is its purpose?


* Differentiate between Complier and Interpreter?


* What are the different tasks of Lexical analysis?


* What are the different functions of Syntax phase, Sheduler?


* What are the main difference between Micro-Controller and Micro-Processor?


* Describe different job scheduling in operating systems.


* What is a Real-Time System ?


* What is the difference between Hard and Soft real-time systems ?


* What is a mission critical system ?


* What is the important aspect of a real-time system ?


* If two processes which shares same system memory and system clock in a distributed system, What is it called?


* What is the state of the processor, when a process is waiting for some event to occur?


* 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?


* Difference between Primary storage and secondary storage?


* What is multi tasking, multi programming, multi threading?


* Difference between multi threading and multi tasking?


* What is software life cycle?


* Demand paging, page faults, replacement algorithms, thrashing, etc.


* Explain about paged segmentation and segment paging


* While running DOS on a PC, which command would be used to duplicate the entire diskette?

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