Techincal Interview Questions - Operating System (OS)

Operating System Questions

  • · 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?

Replies

  • Kaustubh Katdare
    Kaustubh Katdare
    Hey, great collection. I guess we can start discussion each questions so that CEans can benefit 😀
  • Ankita Katdare
    Ankita Katdare
    I guess we should try to answer the uncommon ones here.

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

    Could someone answer these:

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

    Which is the best page replacement algorithm and Why? How much time is spent usually in each phases and why?

    Write a small dc shell script to find number of FF in the design.

You are reading an archived discussion.

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