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Virtual File System serves two important functions.
1. It divides file-system-generic operations from their execution by defining a clean VFS interface.
2. The VFS is based on a file-representation structure known as a vnode, which have a numerical designator for a network-wide unique file. This network-wide uniqueness is needed for support of network file systems.
Synchronization In communication among processes messages passed may be blocking or nonblocking - also called as synchronous and asynchronous. Blocking send : The sending pr
Explain Busy Waiting Semaphores Weak, Busy-wait Semaphores a) The simplest way to implement semaphores. b) Useful while critical sections last for a short time, or we com
Architects Applications by Making Use of Multitasking As the capability of computer hardware keeps increasing, operating systems are presented with overwhelming opportunities.
a summary of what operating system do
LRU page replacement In slightest recently used page replacement algorithm we will replace that page that hasn't been used for the longest period of time. This is similar as an
Some people write custom memory allocators to meet their speci?c needs. Although this is not needed for most of the applications, it is also not uncommon. The goal, of course, is t
Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that a 'replace the page that will not be
Ask using a laballed diagram explaining the architecture of windows operating ststem
Q. Compare the utilization of networking sockets with the use of shared memory as a mechanism for communicating data between processes on a single computer. What are the merits of
Q. Several CPUs provide for more than two modes of operation. What are two probable uses of these multiple modes? Answer: Although most systems merely distinguish between use
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