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Q. How Program execute in operating system?
Program execution: Operating system loads a program in memory and executes the program. The program should be able to end its execution either abnormally or normally.
I/O Operation: I/O refers to any file or any specific I/O device. Program may need any I/O device while running. So operating system should provide required I/O.
File system manipulation: Program requires towrite a file or read a file. The operating system gives the permission to program for operation on file.
Define busy waiting and spinlock. When a process is in its significant section, any other process that tries to enter its critical section must loop continuously in the entry c
Q. What kinds of services does the process manager provide? Define local procedure call? Answer: The process manager offers services for creating and deleting and using proce
Define the “turn-around” time of a user job Turn- around time is total time taken to execute the job.
Assume that P A , P B and P C are three distinguished program s . When P A is executed, it needs 10 ticks to complete its execution and it forks new processes executing P B at tick
Synchronization In communication among processes messages passed may be blocking or nonblocking - also called as synchronous and asynchronous. Blocking send : The sending pr
justify the role played by the operating system in managing the process to avoid deadlock
Write a short note on Memory management. Memory management includes reallocating and allocating the memory space. The kinds of allocation of memory FIXED PARTITIONING
Performance of demand paging Demand paging can have an important effect on the performance of a computer system. As long as there are no page faults, the effective access time
Q. Explain about Spooling? Acronym for simultaneous peripheral operations on line. Spooling denotes to putting jobs in a buffer, a special area in memory or on a disk where
Q. Consider the two-dimensional array A: int A[][] = new int[100][100]; Whereas A [0][0] is at location 200 in a paged memory system with pages of size 200. A little process
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