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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.
Explain Client Server Model. In the client- server model, communication usually takes the form of a request message from the client to the server asking for several works to be
Does the minimum spanning tree of a graph give the shortest distance between any 2 specified nodes? No. The Minimal spanning tree makes sure that the total weight of the tree i
What is Delay System? Delay System: A class of telecommunication networks like data a network that places the call or message arrivals in a queue in the lack of resources, an
Q. Define Immediate Addressing Mode with example? Immediate Addressing Mode An immediate operand can be a constant expression like a character, a number or an arithmetic e
What is multiplicity? Multiplicity is applied to attributes for data base application. Multiplicity for an attribute specifies the number of possible value for every instantiat
Make a console application. Add class 'Account' having variables as num (integer) name (String), bal (double), ac_code (byte). Describe four different constructors to initialize th
Define Assembly Assembly is a one deployable unit that contains information about the execution of classes, structures and interfaces. it also keeps the information about itsel
Easter Island is a small island (about 150 square miles in area) in the Pacific Ocean about 2,000 miles from South America. In about 400 AD there was a small population of settlers
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
Explain Yet another Compiler-Compiler. YACC uses for "Yet another Compiler-Compiler": Computer program input usually has some structure; actually, all computer programs which
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