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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.
explain michesons inferometer
What are the different methods used for handling the situation when multiple interrupts occurs? 1) Vectores interrupts 2) Interrupt nesting 3) Simultaneous Requests.
Find a 3NF decomposition of the following relation scheme: University (Faculty, Dean, Department, Chair, Professor, Rank, Student}. The University relation satisfies the following
what is relationship among objects in software engineering??
Can you give an example of when it would be appropriate to use a web service as opposed to a non-serviced .NET component? A web service has the following characteristics: 1
A number of 256 x 8 bit memory chips are available. To design a memory organization of 2 K x 8 memory. Identify the requirements of 256 x 8 memory chips and explain the details.
A data structure in which an element is added and detached only from one end, is known as Stack
Magento is a feature-rich eCommerce platform built on open-source technology that gives online merchants with unprecedented flexibility and control over the look, content and funct
How does computer started?
Q. Advantages of using clusters? Parallel and distributed applications Decreased turnaround time Balanced loads Utilization of more powerful hosts Access to
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