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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.
Write short note on Associated vs. Common channel signaling. Associated vs Common channel signalling: The out band signalling suffers from the very restricted bandwidth.
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Define macros. A macro is a pre-processor directive which is a program that processes the source code before it passes by the compiler. These are placed in the source program
client server or multithreaded client-server, where server will create pool of worker threads (say 5) to provide services to pool of clients (say 5 ).Server should be behaving as a
what is Throw-way model.
Version 2.8 may bring a combined Transform tool (Scale, Rotate,Flip and Perspective), more use of Cairo for attractive ant aliased graphics and more usability improvements. We will
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What should the size of ''t'' in btree be depending on the hard disk size
Question: (a) (i) Explain what do you understand by Client/server architecture? (ii) List and briefly describe 3 types of Client/server architecture. (b) The most impo
What are the two independent mechanisms for controlling interrupt request? At the device end, an interrupt enable bit in a control register verifies whether the device is permi
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