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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.
What is Machine.config? Machine configuration file: The machine. config file contains settings that apply to the whole computer. The machine.config, which can be found in the
Real time (transaction) processing In real time (transaction) processing files are generally updated in real time (for example when booking flights on an airplane); however in
Q. What is Unordered Lists? First, we will build an unordered list. Many times, these lists are also termed as bulleted lists. These lists are characterized by list items which
Before we can use Internet, we have to gain access to it. This access is achieved in one of numerous ways. Above all, the Internet is a collection of networks which are connected t
Q. Illustrate basic working of Physical layer? Physical layer: Physical layer is concerned with sending raw bits between source and destination nodes over a physical medium.
advantages and disadvantages of a header node
Explain the working of Interpreter? The Interpreter is a program that executes instructions written in a high-level language. There are two manners to run programs written in a
Q. Initialize new PVM processes? pvm_spawn( char *task, char **argv, int flag, char *where, int ntask, int *tids ) Initialize new PVM processes. Task a character st
BIOS or Basic Input/Output System is the first program accessed by the processor during start up to make sure that all the other basic programs, hard drives, ports, peripherals and
Q. Define Hyperlinks? Hyperlinks, or links are one of the most significant characteristics of web pages. A link moves us from current page to a destination which is specified i
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