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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.
Define briefly about Extranet. Extranet: Extranet is Extension of an Intranet which makes the latter available to outside companies or individuals along with or without
A common task for a system administrator is to create new user accounts. In this lab you will be creating output that looks like an /etc/passwd file. The Problem You are to
Describe generic framework for electronic commerce Generic Framework for electronic commerce contains the Applications of EC (like as banking, shopping in online stores and m
Can you define a field without a data element? Yes. If you require specifying no data element and thus no domain for a field, you can enter data type and field length and a sh
Search in Problem Solving: If Artificial Intelligence can inform that the other science about anything, it is about problem solving and, in particular, how to research after s
Reprography In order to disseminate information widely some method of reprography is invariably used. Reprography is the science and practice of copying documents by photograph
implementation of threads
VBA is licensed to Microsoft and this compatible with and only Microsoft products. Code written is compiled by an intermediate language known as P-code and this is stored in hostin
The GNU Image Manipulation Program, or GIMP, is a raster graphics editor application with some support for vector graphics. GIMP is used to process digital graphics & photographs.
Explain LRU Page replacement algorithm. LRU policy: It expands to least recently use. This policy proposes that we remove a page that last usage is farthest from present time
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