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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 are the characteristics of software measurement? Measured property Object of measurement Source of measure Purpose measurement Context of measurement.
Q. Discuss some of the problems that are faced during maintenance of software? - Habitually another person or group of persons working over the years in isolation from each oth
Data accuracy Don't collect redundant data The questions to be answered should be decided in advance and the needed data identified. Tell people why the data is being co
Q. Explain Test archiving systems? Test archiving systems: the goal is to keep follow of series of tests ant to act as the basis for documenting that the tests have been done
Explain an error checklist for inspection in detail.
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
Q. Compare CMM with ISO 9001 ? 1: Management responsibility: ISO 9001 needs that the quality policy be defined and documented and understood as well implemented and maintaine
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What is software architecture? The software architecture of a program or computing system is the structure or structures of the system, which comprises software methods, the e
What is meant by Data dictionary? The Data dictionary is an organized listing of all data constituents that are related to the system, with precise, accurate definitions so tha
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