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?