Operating System Basics Interview Questions

43. What are the possible threads a thread can have? Ready Standby Running Waiting Transition Terminated

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37. List out some reasons for process termination. Normal completion Time limit exceeded Memory unavailable Bounds violation Protection error Arithmetic error

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31. 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.

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25. In loading programs into memory, what is the difference between load-time dynamic linking and run-time dynamic linking? For load-time dynamic linking: Load module to be loaded is read into memory. Any reference to a target external module causes that…

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19. What are local and global page replacements? Local replacement means that an incoming page is brought in only to the relevant process address space. Global replacement policy allows any page frame from any process to be replaced. The latter…

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13. What is meant by arm-stickiness? If one or a few processes have a high access rate to data on one track of a storage disk, then they may monopolize the device by repeated requests to that track. This generally…

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7. What are turnaround time and response time? Turnaround time is the interval between the submission of a job and its completion. Response time is the interval between submission of a request, and the first response to that request.

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1. Explain the concept of Reentrancy? It is a useful, memory-saving technique for multiprogrammed timesharing systems. A Reentrant Procedure is one in which multiple users can share a single copy of a program during the same period. Reentrancy has 2…

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