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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.
In software QA or software testing, a parameter is an item of information - like a name, number, or selected option - that is approved to a program, by a user or another program. B
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Write about the types of project plan. Quality plan - This plan explains the quality procedures and standards that will be used in a project. Validation plan - This plan explai
Different characteristics of software measures Different characteristics of software measures identified by Basili (1989) are given below: • Objects of measurement: They i
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.
Q. How Messages can be used in software engineering? Messages:- The interaction or communication between the different objects and classes is done by passing messages. The ob
State about the Software Requirements Specification This document is produced as output of requirement analysis. Requirement analysis involves obtaining a clear and thorough
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The operational methods and processes used to achieve quality requirements.
Micro CDS/ISIS Application: In libraries there are a number of repetitive operations. If one Miens the procedures for ordering, receiving, processing and circulating a book, o
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