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In a memory hierarchy system, data and programs are first stored in secondary or auxiliary memory. Program and its related data are brought in main memory for execution. What if the size of Memory needed for Program is more than the size of memory? Virtual memory is a idea used in some large computer systems which allow user to construct programs as though a large memory space were available, equal to total of secondary memory. Every address produced by CPU goes through an address mapping from so-called virtual address to a physical address in main memory. Virtual memory is employed to give programmers the illusion that they have a very large memory at their disposal although computer in fact has a relatively small main memory. A Virtual memory system offers a mechanism for translating program-generated addresses in correct main memory locations. This is done dynamically whereas programs are being executed in CPU. The translation or mapping is handled automatically by hardware through a mapping table.
With reference to telephone traffic, explain the terms BHCR. BHCR: Busy hour calling rate is explained as the average number of calls originated through a subscriber througho
Multiple bus architecture: One solution to the bandwidth restriction of a single bus is to simply add extra buses. Consider the architecture indicated in given figure that con
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The combination of an IP address and a port number is known as a socket.
Define the Information System Growing sophistication in products and markets is driving the organisational requirement for increasing amounts of information. This req
1. Write the function makegrid. This function accepts a width and height and creates a grid/matrix of cells. The width gives the number of columns and the height the number of rows
find a c program to find the area under the curve y=f(x) between x=a and x=b,intregrate y=f(x)between the limits of a and b.the area under a curve between two points can be found b
Extranet : Extranet is Extension of an Intranet that makes the latter accessible to outside companies or individuals with or without an intranet. It is also described as a coll
What is Fork swap? "Fork ()" is a system call to make a child process. When the parent process calls "fork()" system call, the child process is formed and if there is short of
Choose the descriptions below with the most appropriate memory management scheme (A through D). Solutions may be used once, more than once, or not at all. A. Fixed-partitio
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