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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.
What is recursion? A recursive procedure should have two properties. What are they? Recursion means function call itself repeatedly. Properties : (1) There
How the simulation is done Data is entered into the computer and simulation is run. The below scenarios may be tried out: - Timing of lights varied to see how traffic flow
Draw a neat labelled diagram of the OSI reference model for computer networks showing all the layers and the communication subnet boundary. The computer network consists of all
Define bus A group of lines that serves as a connecting path for various devices is known as a bus.
What is disadvantage of Distributed systems? Ans. Reliability is disadvantage of Distributed system.
How is basic authentication worked? When an exact resource has been protected using fundamental authentication, Apache sends a 401 Authentication needed header along with the r
Illustrate the benefits of Functional model Functional model shows how values are computed. This model describes decisions or object structure without regard for sequencing. I
Write notes on Frame Filtering Techniques. Frame filtering: The most valuable function performed through bridges is frame filtering. A bridge doesn't forward a frame unles
A combinational circuit has 3 inputs A, B, C and output F. F is true for following input combinations A is False, B is True A is False, C is True A, B, C are
This assignment is based around two UK websites. In order to avoid difficulties such as the websites changing, or disappearing, we have downloaded these websites and you can find t
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