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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.
Write a short notes on storage classes in C. Every variable and function in C has two attributes : type and storage class. The four storage classes are automatic, external, reg
State about the Object oriented analysis Object oriented analysis (OOA) is concerned with developing software engineering specifications and requirements that expressed as a s
Postpurchase Interaction Customer service and support: The considerations at this stage can be explained by the following example: Consider a bundle having of a portfolio
How free-space is managed using bit vector implementation? The free-space list is executed as a bit map or bit vector. Each block is shown by 1 bit. If the block is free, the b
What is a Demultiplexer ? Ans. Demultiplexer has similar circuit as decoder but here E is obtained as the particular input line, the output lines are similar as decode
Develop a regular expression for Real number and Real number with optional fraction (i) A regular expression for real number is [+ | -] (d)+. (d)+ (ii) A regular expression
Is it true that the Logical Database reads the data from the database tables using Select Statements. Yes. We are coding that in Database part of LDB.
Explain the CCITT hierarchical structure of switching using block schematic. Hierarchical network are able of handing heavy traffic where needed, and at similar time use mini
Preamble The owner of the local shopping mall, MaxiMart, has contracted you to assist in the design of an interactive directory. The interactive directory is to be permanently l
What is the fundamental difference between the transactions made using Smart Card and E-cash? Smart Card and E-Cash: E-cash storable smart cards can dispense and store ca
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