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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.
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Explain about the software testing strategies. A method approach to software testing. Verification and Validation. Verification refers to the set of activities that ma
What are the two levels of testing? i. Component testing Individual components are tested. Tests are produced from developer's experience. ii. System Testing The group
"State how you would type arguments h, o, w, n, o, w to the macro cat, define(cat, $1$2$3$4$5$6$7$8$9) so that the printed result was how now Describe exactly what happens when
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Level 2 (Repeatable) Organisation satisfies all the requirements of level-1. At this stage, basic project management policies and associated procedures are established. Insti
What are the umbrella activities of a software process? Software project tracking and control. Risk management. Formal Technical Reviews. Software Quality Assurance.
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