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Additional Reference bits algorithm
Here we keep an 8-bit byte for every page in memory. At standard intervals the reference bit is shifted by the OS. If a shift register contains 00000000 then the page hasn't been used for the last 8 time periods. A page with a history 11000000 is more recently used than 01000000. The no of bits are able to be varied accordingly to the needs of the OS.
Define the DosSleep(ms) Function used in the os/2 DosSleep() suspends the currently executing thread for some time interval specified in the ms parameter. If a value of 0 is
Problem 1: (a) What are the likely benefits which an organisation may derive from the planning process? (b) Explain the main reasons why an organisation may fail to plan.
diffenciet between least recently used and not recently used
What are the characteristics of SRS? i. Correct - The SRS should be made up to date when appropriate requirements are identified. ii. Unambiguous - When the requirements are
Scalability : Scalability is the competence of the system to adapt to increased service load. A scalable system will respond more gracefully to increased load than a non-sc
what is the function of operation management?
For reading, most operating systems use demand paging. This means that pages are only read from the disk into physical memory when they are needed. In the page table, there is a re
how do you calculate page faults
what is system performence?
Q. How does DMA raise system concurrency? How does it make difficult hardware design? Answer: DMA increases system concurrency by allowing the CPU to perform tasks while the
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