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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.
Q. When an object travels with constant velocity does its average velocity during any time interval differ from its instantaneous velocity at any instant? Answer:- No It i
what is Throw-way model.
How do subroutines help in program writing? Some of the significant characteristics of Subroutine that help in program writing are: A subroutine is named, each have a
Q. What are basic features that collaboration systems might have? ANSWER: Three basic features of collaboration systems are Web-conferencing, project management,
What do you mean by best fit? Best fit allocates the smallest hole that is big enough. The whole list has to be searched, unless it is sorted by size. This method makes the sm
Question: a) Why do we use the Internet as the new distribution channel for e-banking products and services? b) In the context of e-banking or e-commerce, outline some o
Set up a standard population model structure. The population will begin with 24 people. We do not have actual data to support a birth rate, but we could calculate a reasona
Write a CGI program that displays a count of how many times a browser on each computer has contacted the server. echo Content -type: text /html echo N=$QUERY_STRING Ec
Absolute addressing and Implied addressing A fixed address is specified and also called as direct addressing. The location of data is implied by instruction itself, so no
A Web site is a set of linked documents with shared attributes, like related topics, a similar design or a shared purpose. Macromedia Dreamweaver is a site creation and management
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