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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.
Write definition of software process. Software process is termed as the structured set of doings that are required to develop the software system.
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Illustrate exploratory testing. - In exploratory testing approach testers are involved in maximum test execution and minimum planning. - Planning includes creation of a test
Problem 1 Explain change control? Write down the steps followed for change control Problem 2 Explain the concept of Baselines with reference to software configuration m
Ad hoc testing is a testing approach. It is the least formal testing approach.
Define Requirement Engineering. Requirement Engineering is a process that includes all of the activities needed to create and maintain a system requirements document. The fo
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
What is continuous CMMI MODEL? This is a finer-grain model that considers individual or groups of practices and assesses their use. The maturity assessment is not a one valu
Question: (a) Differentiate between circuit switching and packet switching. (b) Using an example, explain the main parts that form a URL (Uniform Resource Locator). (c)
What is the correct order in which a software project manager estimates various project parameters while using COCOMO?
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