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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.
of elicitation methods
Repeated inheritance If a class inherits more than once from the same class then it is referred to as repeated inheritance.
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What are the Problems of Prototyping In some organisations, theprototyping isn't as successful as anticipated. A common problem with this approach is that people expect much
what is COCOMO model and where it is used also say about COCOMO model when in use then how it act and its characteristtics details
#This is part of my prog. in matlab and a graph has to be drawn for this equation. >> es0=6.11; T0=273.15; Lv=(2.5)*10^6; Rv=461.5; Td=80:.2:500; e=es0*exp((Lv/Rv).*((1./T0)-(1./T
What does Validation represent? Validation show the set of activities that make sure that the software that has been built is satisfying the customer requirements.
Aggregation between objects Aggregation among objects shows a relationship. It is a whole/part relationship. Aggregation might be implying containment.
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