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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.
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Name the ABAP/4 Modularization techniques. Techniques are:- Source code module. Subroutines. Functions.
Q. Explain the Use of functions in parallel programming? include "pvm3.h" main() { int cc, tid, msgtag; char buf[100]; printf("%x\n", pvm_mytid());
What are the lists of signal available? Terminating and suspending method Physical circumstances Available for the Programmer Fault in power supply
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When a database developer uses Hybrid OLAP it seperates the data among relational and specialized storage. In some certain modifications a HOLAP database may store vast amounts of
Q. Differentiate the Multiplexer and Demultiplexer with respect to their concept, block diagram and circuit. Q. What is the difference between Synchronous sequential circuits an
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