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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 do you mean by the computer based system? The computer based system can be termed as "a set or an arrangement of elements that are managed to accomplish some predefined g
What is Compatibility testing - It's a non-functional test performed on a software system or component for checking its compatibility with the other parts in computing environm
When is RTM (Requirement traceability matrix) prepared - after or before test case designing? - RTM is prepared before test case designing. - Requirements must be traceable
Software project planning entails what activities?
system architecture block diagram
What is verification? Verification is the process of determining whether the output of single phase of software development conforms to that of its last phase, whereas vali
This assignment uses the data set rent.txt, the Housing Rent Prices in Munich file available at ">http://www.interactivegraphics.org/Datasets.html. 1.Produce a scatterplot of Re
What does data object means? Data object is a group of attributes that behave as an aspect, quality, characteristic or descriptor of the object.
Different characteristics of software measures Different characteristics of software measures identified by Basili (1989) are given below: • Objects of measurement: They i
What is a modular system? A modular system having of well defined manageable units to well defined interfaces between them.
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