Operating System Interview Question and Answers

11. What is a sector?
  Smallest addressable portion of a disk.
12. What are the different operating systems?
  • Batched operating systems
  • Multi-programmed operating systems
  • Timesharing operating systems
  • Distributed operating systems
  • Real-time operating systems.
13. What is busy waiting?
  The repeated execution of a loop of code while waiting for an event to occur is called busy waiting.
14. What are system calls?
  System calls provide the interface between a process and the operating system. System calls for modern Microsoft windows platforms are part of the win32 API, which is available for all the compilers written for Microsoft windows.
15. What are various scheduling queues?
  • Job queue
  • Ready queue
  • Device queue
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