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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.
A manifestation of an error in software. A fault, if encountered, might cause a failure.
Explain the Per-action modeof QTP - Best used in below cases: - When creating simple record and run tests when there is just one or very few tests which correspond to int
I have a comprehensive question for Software Metrics ...it is 16 question
Why Software maintenance is require Software maintenance is done due to the below factors. i) To rectify the errors which are encountered during the operation of software.
Software faults are unseen programming errors. Software faults are errors in the correctness of the semantics of computer programs.
This strategy includes testing the classes as they are integrated into the system. The traditional approach would test every operation separately as they are executed into a class.
What is architectural evolution? Architectural evolution is the practice of modifying a system from a centralized architecture to a distributed architecture like client server.
Q. What is RE-ENGINEERING? RE-ENGINEERING :- It is re-organizing as well as modifying existing system to make them more maintainable. It involves Source code translatio
What are CMMI model components? Process areas 24 process areas that are applicable to process capability and improvement are identified. These are organised int
Mention some of the Design principles. The design process should not vary from tunnel vision. The design should not reinvent the wheel. The Design should exhibit unifo
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