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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.
Dynamic and static metrics Dynamic metrics are closely related to software quality attributes It is relatively easy to measure the response time of a system (performance
schema tools
What are the objectives of Analysis modelling? i. To explain what the customer requires. ii. To establish a basis for the creation of software design. iii. To devise a se
What are Documentation standards? Particularly important - documents are the tangible manifestation of the software. Documentation process standards Concerned with how
package(''python'', ''2.6.5''). package(''python'', ''2.5.4''). package(''python'', ''1.5.2''). package(''python'', ''3.1.0''). and I already have these functions that provide me:
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
how was transform mapping like?
The level at which the software uses scarce resources Efficiency level.
Illustrate parameterization in QTP. - Parameterization - Passing values from external source into script. - The number of values passed can be single or multiple. - It he
Fan in/Fan-out :- Fan-in is a measure of the number of process or functions that call some other function or process (say X). Fan-out is the number of functions that are known
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