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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.
What is function point? Function point is the size of measure it is also used to calculate approximately the software cost. Function point (FP)=Function Count (FC) * Value a
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Construct an E-R diagram for a department store database. This database contains information about customers, items they order, departments in the store, employees, and suppliers o
A store is in the business of selling paints as well as hardware items. A numeral of reputed companies supplies items to the store. New suppliers are able to also register with the
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What is Software failure? Software failure happens when the software does not do what the user wants to see.
Question 1 V-Model and Spiral Model, Waterfall Model are of the software development processes. Companies are using these models to have a systematic and defined approach in softw
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