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Q. When a process creates a fresh process using the fork() operation which of the following state is shared among the parent process and the child process?
1 Stack
2 Heap
3 Shared memory segments
Answer: Merely the shared memory segments are shared between the parent process as well as the newly forked child process. Copies of the stack as well as the heap are made for the newly created process.
Internal file structure All disk I/O is performed in units of single block, and all blocks are the similar size. It is unlikely that the physical record size will exactly match
The swapper work s on the biggest scheduling priority. Initially it will look for any sleeping process, if not get then it will see for the ready-to-run process for swapping. Bu
Process States A total of nine states are acknowledged by the UNIX system. They are like as follow: User running Executing
Q. We have stressed the require for an operating system to make efficient use of the computing hardware. When is it suitable for the operating system to forsake this principle and
what is the use of valid invalid bits in paging
What is the purpose of system calls? System calls permit user-level processes to request services of the operating system.
Q. Name two differences between logical and physical addresses? Answer: A logical address doesn't refer to an actual existing address rather it refers to an abstract address in
What are the allocation methods of a disk space? Methods of allocating disk space which are widely in use are a. Contiguous allocation b. Linked allocation c. Indexed
what are the threds in operating system?
What is the benefits OS co-operating process? Information sharing. Computation speeds up. Modularity. Convenience.
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