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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 meant by System Requirements? Place the system services and constraints in detail. Serves as a link between the system purchaser & the system developer.
What is EVA? Earned Value Analysis is a process of performing quantitative analysis of the software project. It gives a common value scale for each task of software project. It
Iterative Enhancement Model Iterative Enhancement Model: This model has the similar phases as the waterfall model, but with fewer restrictions. Normally the phases happen in th
Functional testing is black-box type of testing geared to functional needs of an application. Test engineers *should* do functional testing.
What is software testing?
Define Data objects, attributes & relationship. Data object: Illustration of any composite information that must be understood by a software. It can be any external entity. Att
Explain in detail about data modelling. Data modeling makes use of the ERD. Having of 3 interrelated information. The data object. Attributes. Relationsh
Q. What are the Debugging programs? Debugging programs:-A program which runs simultaneously with the program under test and provides commands to examine memory and registers st
Information engineering is a system engineering approach which is used to describe architectures which enable a business to use data professionally. The intent of information eng
Explain Cardinality & Modality ?
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