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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.
Question 1: We have a small system with a call graph as given below. Consider that each vertex is a module. All modules are new (i.e., n = n0) Also consider that the number of
What are the reasons behind to perform white box testing? There are three major reasons behind performing the white box testing. 1. Programmers may have some incorrect assum
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What is a boundary value analysis? A boundary value analysis is a testing method in which the elements at the edge of the domain are selected and tested. It is a test case desi
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Explain various Object Oriented concepts used in Software Engineering. The concepts of Object Oriented concepts used in Softwar Engineering: Object Class:- Enc
Define software process. Software process is explained as the structured set of activities that are need to develop the software system.
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A measure of the severity and probability of undesired effects. Often taken as the easy product of probability and consequence.
Grey box testing is a software testing method that uses a combination of black box testing and white box testing. Gray box testing is not the black box testing, because the tester
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