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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 the correct order in which a software project manager estimates various project parameters while using COCOMO?
How is cyclomatic complexity useful in program test? Cyclomatic complexity calculates the amount of decision logic in a single software module. It is used for two related purpo
what tools are used for analysis of any software system?
Q 1 Define a software process. How do software myths affect a software process? Ans: A Software process is a Coherent set of activities for designing, specifying, implementin
Differentiate between regression testing and re-testing - Re-testing: - It means testing a single defect that was just fixed. Only one test is performed here. - The ta
A test method satisfying coverage criteria that needs each decision point at every possible branch to be implemented at least once.
Level 5 (Optimising) Organisation satisfies all the requirements of level-4. This is final level. Organisation at this maturity level is considered almost perfect. At this st
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A computer program is "user friendly", when it is designed with simple of use, as one of the primary purposes of its design.
Explain about the incremental model. Have similar phases as the waterfall model. Phases are Analysis. Design. Code. Test. Incremental model delivers
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