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What is page fault and what are the steps taken by the OS to remove page fault?
A page fault is caused while a page that hasn't been brought into memory is being addressed. The paging hardware now origins a page fault trap. This trap is a result of the OS malfunction to bring the desired page into memory. The procedure to eliminate the fault is
1. A confirms is made to see whether the reference is valid.
2. If reference is unacceptable then process is terminated else the page is brought into memory.
3. A free frame is found as well as a disk schedule is prepared to read the desired page into frame.
4. When complete page table is updated along with the interrupted instruction is restarted.
List the various file attributes. A file has particular other attributes, which vary from one operating system to another, but typically having of these: Name, identifier, typ
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Q. What is the purpose of system calls? Answer: System calls permit user-level processes to request services of the operating system.
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What are the disadvantages of swapping technique used in pre-3BSD UNIX systems? If there is excessively much memory contention, processes are swapped out until sufficient
mariz
Define System Call A system call is a request that is made by any program to the operating system for carrying out tasks - picked from a predefined set - which the said program
Ask question #Minimuexplain the programable clock modes in a computer system m 100 words accepted#
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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