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Additional-reference-bits algorithm
We can keep an 8-bit byte for every page in a table in memory. The operating system shifts the reference bits right 1 bit, discarding the low-order bit. These 8 bits sift register have the history of page used for previous eight time periods. A page with a history value of 11000100 has been used more just than has one with 01110111. The page with the lowest number is the LRU page, and it can be changed.
How is memory management done using linked lists? Each one node of the l list will have 4 fields as follows 1-this tells whether it s a hole or a process 2-starting ad
examples of independent process
Compare 2 different operating systems.
Problem: a) The CPU can access 2 storage devices directly. What are these 2 storage devices? b) Define 2 key issues involved in memory management. c) How do processes sha
What is virtual memory? Virtual memory is a method that allows the execution of processes that might not be completely in memory. It is the separation of user logical memory fr
The term IPC (Inter-Process Communication) defines several paths by which different process executing on some operating system interact between each other.
System Service Program system service program Supports and provides the services for other program. System service program perform Varity of tasks. They are further divided in
WHAT IS ACYCLIC GRAPH DIRECTORY
What is Single-level Directory All files are constrained in the similar directory, which is simple to support and understood. One limitation is when the number of files enhance
What is internal fragmentation? Consider holes of 20k assume the process requests 18 bites. If we allocate accurately the request block, we are left with a hole of 2k. The over
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