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Buffering
Messages exchanged by communication processes reside in a impermanent queue. Such a queue can be executed in three ways.
If the link is full, the sender must block unless space is available in the queue.
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
What are the various file operations? The six basic file operations are Creating a file Reading a file Writing a file Repositioning within a file Tr
what is deadlock
Before proceeding with its execution, every process must obtain all the resources it needs is called Hold and wait
Why is rotational latency usually not considered in disk scheduling? How would you modify SSTF, SCAN, and C-SCAN to include latency optimization? Most disks do not export their
what are operating system services
Q. State three merits of placing functionality in a device controller rather than in the kernel and State three disadvantages. Answer: Three advantages: Bugs are less probabl
Hierarchical paging method Most modern computer systems maintain a large logical-address space. In this situation the page table itself turns into excessively large. To remedy
What are the requirements for solution of critical section problems? Mutual exclusion : If process p is implementing in its critical section then no other processes can be exe
Define I/O and CPU Bursts Applications typically to through cycle of CPU bursts and Input/output bursts. Since the CPU sits idle during I/O operations, efficiency is improved
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