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Q. How does the distinction among kernel mode and user mode function as a rudimentary form of protection (security) system?
Answer: The distinction among kernel mode and user mode provides a rudimentary form of protection in the following manner. Certain instructions could be executed merely when the CPU is in kernel mode. Likewise hardware devices could be accessed only when the program is executing in kernel mode. Control over when disrupt could be enabled or disabled is also possible only when the CPU is in kernel mode. Therefore the CPU has very limited capability when executing in user mode thereby enforcing protection of critical resources.
Explain the Thread Local Storage (TLS) Windows NT provides unique functions for per-thread data management. Thread local storage (TLS) is a concept defined in NT so develope
Invalid page fault :If a page fault happens for a reference to an address that's not part of the virtual address space, so that there could not be a page in memory corresponding
Q. What are the three main activities of an operating system in regard to memory management? Answer: a. Keep follows of which parts of memory are currently being used and
what are the overall concepts of deadlock
Q. What are the five main activities of an operating system in regard to process management? Answer: a. The creation as well as deletion of both user and system processes
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An operating system act as an intermediary between user of a computer and computer hardware. The objective of an operating system is to provide an environment in that a user can ex
A set of methods that allow executing a program which is not completely in memory is called A set of methods that allow executing a program which is not completely in memory
is there any difference between the trap and interrupt??
Present your own fully documented and tested programming example illustrating the prevention of a data race in a parallelised program. This is an example where total number of p
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