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Define FIFO Page Replacement Algorithm
This policy simply eliminates pages in the order they arrived in the main memory. By using this policy we simply remove a page based upon the time of its arrival in the memory. For instance if we comprise the reference string that is: 1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5 and 3 frames (3 pages can be in memory at a time per process) after that we have 9 page faults as shown
what is semantics of system call execution?
what is system performence?
How does user specify block to be fetched in direct access? By specifying the relative block number, relative to first block in file, which is block 0.
Suppose your process starts up, and allocates some memory with malloc(). The allocator will then give part of a memory page to your process. The OS then updates the corresponding p
Your task is to replace the round robin CPU scheduling scheme you developed in Practical 6 with a priority-based scheduling algorithm. To simplify matters, you can maintain the ori
What are kernels and what do kernels do? The kernel is a program that comprises the central core of a computer operating system. It has entire control over everything that
For reading, most operating systems use demand paging. This means that pages are only read from the disk into physical memory when they are needed. In the page table, there is a re
Several schemes available are as follows: Pipes : One-way communication process through which different process can interact. The problem is that the two processes could have
Write on short note DMA. Direct M emory Access (DMA) is a technique for transferring data from main to a device without passing it through the CPU. Computers that have
Define a linker program A linker program links the program along with other programs required for its execution.
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