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Basic concepts
When a process is to be changed in, the pager guesses which pages will be used before the process is changed out again. Instead of swapping in a entire process, the pager brings only those essential pages into memory. The valid-invalid bit scheme can be used to distinguish among pages that are in memory and those pages that are on the disk. Access to a page marked unacceptable causes a page-default trap. This trap is the result of the operating system's failure to bring the needed page into memory.
The following is a dump of a TCP header in hexadecimal format: 00CD0018 00000EF1 00000D5D 502200D1 01BF0010 We need to first split the above hex as such 00 CD 00 18 00 00
Question 1 Brief the following distributed computing system model Question 2 Explain the components involved in implementation of RPC mechanism Question 3 What is
What is busy waiting? When strict alteration is done there may take place situation like two processes setting their flag as true. Therefore both of the processes have equal pr
Q. What are the tradeoffs concerned in rereading code pages from the file system versus using swap space to store them? Answer: If codes pages are accumulate in swap space th
Memory Protection
Locks (also known as mutexes, short for mutual exclusion locks) provide mutual exclusion to shared data inside a critical session. They are implemented by means of two atomic routi
Q. Consider a system in which a program is able to be separated into two parts: code and data. The CPU recognizes whether it wants an instruction (instruction fetch) or data (data
What is a Dispatcher? The dispatcher is the module that gives control of the CPU to the process selected by the short- term scheduler. This function includes: Switching
FIFO is named as 'named pipes'. FIFO (first-in-first-out) is a special file which is laid to be data transient. Once data is load from named pipe, it cannot be load again. Also, da
Define logical address and physical address. An address formed by the CPU is referred as logical address. An address seen by the memory unit that is the single loaded into the
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