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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.
How do you achieve workflow automation in e-business environment? In order to run easily, organizations often standardize processes across the organization and encourage user
What is schedulers? A process migrates between the various scheduling queues throughout its life time. The OS must select processes from these queues in some fashion. This sel
Discuss about OS as system software? OS is a large program or actually a collection of routines that is used to control the sharing of and interaction between various computer
Different systems that can participate in grid computing as platform are: Windows 3.1, 95/98, NT, 2000 XP , DOS, OS/2, , supported by Intel ( x86); Mac OS A/UX (Unix) sup
WestEast College hires you as a systems analyst to design its new admission/registration system. WestEast College is one of the top ranked schools in the United States. It is a
What is memory controller? A memory controller is a circuit which is interposed among the processor and the dynamic memory. It is used for performing multiplexing of address bi
Q. What do you mean by PROC Directive? PROC Directive: Code segment comprises executable code for a program that includes one or more procedures defined initially with PROC dir
A network address prefixed by 1000 is? A network address prefixed through 1000 is Class B address.
Explain the term- macro? A term macro is a set of instructions, which can be executed repeatedly. It is useful for automating certain routine tasks like printing reports etc. T
Q. What do you mean by Program Counter? Program Counter (PC): It determines the instruction that is to be executed next which means after the execution of an on-going instructi
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