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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.
Q. What is Unit testing explain ? Unit testing: Unit testing is undertaken after a module has been coded and successfully reviewed. Unit testing (or module testing) is the te
What are the tools are mainly used for information gathering 1. Record review: A review of recorded documents of organisation is performed.Manuals procedures, forms and book
Demonstrate the Sequence of prototyping Sequence of prototyping is demonstrated in following Figure.
Configuration Management: Because of several reasons, software changes during its life cycle. As a result of the changes made, many versions of the software exist at one time.
what is software decomposition? what are its techniques?
Discuss in details the design principles. The design process is free from tunnel vision. The design should be observable to the analysis model. Design should not reinv
Q. Describe incremental model? Define core product and detailed plan. Ans. The incremental model is proposed by D.L PARNAS. It is basically implemented by combining elements
Product and process standards Problems with standards They may not be seen as relevant and up-to-date by software engineers. They often include too much bureaucratic form
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
Software
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