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Operating Systems 5

Operating Systems Interview Questions - Part 4

What is SMP ?

To achieve maximum efficiency and reliability a mode of operation known as symmetric multiprocessing is used. In essence, with SMP any process or threads can be assigned to any processor.

What are the key object oriented concepts used by Windows NT ?

  • Encapsulation
  • Object class and instance

    Is Windows NT a full blown object oriented operating system? Give reasons.

    No Windows NT is not so, because its not implemented in object oriented language and the data structures reside within one executive component and are not represented as objects and it does not support object oriented capabilities .

    What is a drawback of MVT ?

    It does not have the features like
  • ability to support multiple processors
  • virtual storage
  • source level debugging

    What is process spawning ?

    When the OS at the explicit request of another process creates a process, this action is called process spawning.

    How many jobs can be run concurrently on MVT ?

    15 jobs

    List out some reasons for process termination.

  • Normal completion
  • Time limit exceeded
  • Memory unavailable
  • Bounds violation
  • Protection error
  • Arithmetic error
  • Time overrun
  • I/O failure
  • Invalid instruction
  • Privileged instruction
  • Data misuse
  • Operator or OS intervention
  • Parent termination.

    What are the reasons for process suspension ?

  • swapping
  • interactive user request
  • timing
  • parent process request

    What is process migration ?

    It is the transfer of sufficient amount of the state of process from one machine to the target machine

    What is mutant ?

    In Windows NT a mutant provides kernel mode or user mode mutual exclusion with the notion of ownership.

    Operating Systems Interview Questions - Part 5 >>>

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