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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.
Describe about the Environmental model It indicates environment in which system exists. Any small or big system is a sub-system of a larger system. For illustration, if softw
What are the proper testing strategy It is necessary to develop a proper testing strategy to ensure all possible scenarios are covered and that all error trapping techniques ar
What are the benefits of evolutionary prototyping? i. Fast delivery of the working system. ii. User is included while developing the system. iii. More useful system can b
Explain the Iterative Model Every release of Iterative Model is developed in a specific, fixed time period known as iteration. Each iteration focuses on a certain set of requir
Explain fan out and fan in with example.
what is ethics frameworks
"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
What is Product metrics? A quality metric should be a predictor of product quality. Classes of product metric Dynamic metrics which are collected by measurements made
System software
What are the approaches of integration testing? The integration testing may be performed using two approaches. 1. The non-incremental testing. 2. Incremental testing.
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