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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.
Explain in brief the concept of Functional independence ?
Explain why waterfall model is more advantageous than adhoc methods. Ad-hoc Process Models- "Process capability is unpredictable due to the software process is constantly
How can we re-engineering of any product One additional difficulty in adopting this approach is large investment which exists in software system maintenance. It requires additi
What is SCM? Software Configuration Management is a set of activities carried out for identifying, organizing and controlling alters throughout the lifecycle of computer softwa
Implementing the program with all possible combinations of values for program variables. Feasible only for small, simple programs.
What are white-box, black-box and gray-box testing? White Box (or glass box) testing is the METHOD of giving i/p to the system and checking how the system processes i/p to prod
What is the correct order in which a software project manager estimates various project parameters while using COCOMO?
The "user guide" is the similar as the user manual. The user guide is a document that shows information essential to employ a system or component to get the desired results. Typica
benefits and limitations mysql
Define metrics. Metrics is explained as the degree to which a system component, or process possesses a given attribute.
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