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Briefly discuss on page replacement?
Page replacement approach is fixed as follows. If no frame is free, we search one that is not presently being used and free it. We can free a frame by writing its contents to swap space, and changing the page table to show that the page is no longer in memory.
Consider the subsequent resource-allocation policy. Requests as well as releases for resources are allowed at any time. If a request for resources can't be satisfied because the re
Explain how protection is provided for the hardware resources by the operating system. Dual mode operation Sharing system resources needs operating system to make sure
Define the Client - Server Communications Environment Today's client - server communications environment offers programmers great flexibility for application design. Applicatio
Effects of multiprogramming on resource utilization With the utilize of multiprogramming, batch processing is able to be quite efficient .Just as multiprogramming permits the
Explain the difference between internal and external fragmentation. Internal Fragmentation is the area in a region or a page that is not used by the job occupying that region o
Briefly discuss on I/O hardware? A controller is a collection of electronics that can operate a port, a bus, or a device. A serial-port controller is an easy controller. It is
Page fault is a trap to the software gained by the hardware when a process accesses a page that is goes in the virtual address space, but not added in physical memory. In the har
Q. Why do several systems store the operating system in firm ware and others on disk? Answer: For certain devices such like handheld PDAs and cellular telephones a disk with
The term thread-safe in computer programming describes that routine or portion of the program that may be called from multiple programming threads without uncalled for interactions
___paging fecthces a page only when needed
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