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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 elements of design model? i. Data design ii. Component-level design iii. Interface design iv. Architectural design
Q. Salient features of ISO 9001 certification? Ans) Salient(noticeable) features of ISO 9001 certification are :- All documents concerned with the development of a softw
Mutation testing is type of software testing where our goal is to make mutant software fail, and therefore demonstrate the adequacy of our test case.
What is function point? Function point is the size of measure it is also used to calculate approximately the software cost. Function point (FP)=Function Count (FC) * Value a
What are the Rules for making DFD The below factors must be considered when making DFDs: 1. Keep a note of all processes and external entities. Give unique names to th
1) Case Analysis (maximum of 6 pages per case, double spaced) The following format may be used as a guideline for Case Analysis: Key Issues Identified in Case Sta
Question: Consider the University modular degree scheme where students choose a selection of modules from a large menu. Here we have the basic types [PERSON, MODULE], the set o
Stochastic testing is the similar as "monkey testing", but stochastic testing is a lot more technical sounding name for the similar testing process.
Handling customer complaints There are always some customers who complain after completing the sales. Like customer objections, don't take complaints negatively. Other than
Name certain common tools which are used for load testing. - Rational Performance Tester by IBM Rational - Open STA an Open Source tool - LoadRunner by HP - Silk Perfo
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