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Implementing Protection with Virtual Memory - computer architecture:
To enable the operating system to implement protection in the VM system, the HW have to:
I. Support at least 2 modes that denoted whether the running process is a user process (executive process) or an operating system process (kernel/supervisor process).
II. Provide a part ion of the CPU state that a user process may read but not write (includes supervisor mode bit).
o Only operating system process may change page tables. Page tables are held in operating system address space thereby preventing a user procedure from changing them.
o When processes desire to share information in a restricted way, the OS have to assist them.
o The write access bit (in both the TLB and the page table) can be used to limit the sharing to only read sharing.
Researching strategy - artificial intelligence: If our search and researching strategy and swot of it is surety to find all types of hints such the solutions eventually, then
#questi on..
It depends on our requirement. When we are needed an integer to be stored in 1 byte (means less than or equal to 255) we use short int, for 2 bytes we use int, for 8 bytes we use l
Let us see the pairs that can be considered as adjacent in Karnaugh's here. The pairs are: 1) The four corners 2) The four 1's as in top and bottom in column 00 & 01
Q. Demonstration of sorting problem? The term sorting implies organising elements of a provided set of elements in a specific order i.e. descending order / ascending order / al
Define Deadlock with Resource request and allocation graph (RRAG) Deadlocks can be described through a directed bipartite graph termed as a RRAG that is Resource Request All
Q. Example of Input a Single Digit? Input a Single Digit for example (0,1, 2, 3, 4, 5, 6, 7, 8, 9) CODE SEGMENT ... ; Read a single digit in BL register with ech
What is program controlled I/O? In program controlled I/O the processor repeatedly checks a status flag to achieve the needed synchronization among the processor and an input a
What is the difference between absolute and relative path name of a file? Absolute path name: This is listing of the directories and files from the root directory to the i
What is Redundant Array of Independent Disks? Researchers are constantly trying to improve secondary storage media by raising their, performance, capacity as well as reliabilit
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