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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.
Q. Find the average of two values? Find the average of two values which are stored in ; Memory locations named FIRST and SECOND ; And puts result in memory location AVG
Explain Implementation techniques Implementation techniques(e.g. remote invocation, HTTP). An event-based cooperation can be executed using message passing or it can be based
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When the user is inputting commands into your shell, it should properly handle delete and backspace. When one of these characters is detected, you will need to remove one character
wait for graph
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Elaborate the memory devices - Semiconductor memory All of the memory used as main store in a modern computer is applied as semiconductors fabricated on wafers of silicon. Sem
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