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LRU approximation page replacement
In this we utilize the reference bit associated with the page entry to choose a page to be removed. The various algorithms used for the implementation is discussed below
is the operating system windows sometimes interupts
As mentioned above, page tables, are lookup tables mapping a process' virtual pages to physical pages in RAM. How would one implement these page tables? The most straightforward
Buddy system of memory allocation Free memory is used to maintain in linked lists, each of similar sized blocks. Every block is of size 2^k. When some memory is needed by a th
what is difference between file descriptor and file pointer?
Define Disadvantages of Top Down parsing of Backtracking The disadvantages of top down parsing of backtracking: (i) Semantic actions cannot be carried out while making a pr
Define UnixWare UnixWare manages resources at the process level. Each resource allocated to the application is actually allocated to the process representing the application. C
Q. Explain about Functions of Operating System? Functions of Operating System Operating system performs 3 functions as follows: 1. Convenience: Operating System mak
What are the different accessing methods of a file? The different types of accessing a file are: Sequential access: Information in the file is accessed sequentially
how are the window activate
What are over lays? If a large process enters which is huge than the available memory we are able to use overlays. In this we can divide process into pieces .which is recognize
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