Questions - Operating System

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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