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QUESTION - Fault Tolerance
(a) Three computers together provide a replicated service. The manufacturers claim that each computer has a mean time between failure of five days; a failure typically takes four hours to fix. What is the availability of the replicated service?
(b) In the gossip architecture, why does a replica manager need to keep both a ‘replica' timestamp and a ‘value' timestamp?
(c) Explain the difference between linearizability and sequential consistency, and why the latter is more practical to implement, in general.
(d) Explain why allowing backups to process read operations leads to sequentially consistent rather than linearizable executions in a passive replication system.
Q. Explain Span and average span size of a program? Span dimension indicates the number of statements that pass between successive uses of a variable. For illustration in the f
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Following is the description of all data member and member functions of respective classes: ? Data members for PropertyCategories: o SocietyName: This data member will be used
Q. How to build the Structure Chart? Building the Structure Chart Processes in the DFD are liable to represent one module on the structure chart Efferent processes
how 94 calculated
What is Benchmark? Ans) A Benchmark is a standard to calculate against.
Discuss in detail about COCOMO model. Constructive Cost Model. Software cost estimation gives the opportunity to estimate of how much months a man take to develop a softw
The aim of regression testing is to test that the fixes have not formed any other problems elsewhere. The aim is to ensure the software has remained intact. A baseline set of data
What is Prototype Prototype is developed so that customers, developers and users can learn more about problem. Hence prototype serves as a mechanism for identifying software r
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