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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.
A system consists of 10 units of resource class Ru. The resource needs of three user processes P1, P2 and P3 are like this Using Banker's algorithm, de
Unix process API The two most important function calls to use when programming with several processes are fork and exec: fork() creates a copy of current process. It gives
Explain in detail about ipc in linux
What is sector sparing? Low-level formatting also sets aside extra sectors not visible to the operating system. The controller can be told to change each bad sector logically w
what are the threds in operating system?
write a linux command to display lines from 25 - 45 of directory "/edc/password" write a linux command to display directory in /edc
What is process control block? Every process is represented in the OS by a process control block. It has many pieces of information associated with an exact process.
scattered resposibi;ity and authority -necessity of operation research
Define approaches that require knowledge of the system state? Answer: Deadlock detection, Deadlock prevention, Deadlock Avoidance.
VARIABLE PARTITIONING We can differ the partitions and change the location according to the size of the process. 50k 40k
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