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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.
A data structure in which an element is added and detached only from one end, is known as Stack
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What is virtual memory? How address mapping is done in cache memory? Elaborate your answer with examples.
Of the two "next screen "attributes the attributes that has more priority is?? Dynamic.
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Sort the following list using selection sort technique, displaying each step. 20,12,25,6,10,15,13
Global and Local Variables Global variables: The features are as pursue Declared outside of all functions or before main. These can be used in all the functions in the progra
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