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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.
How can we know about to divide numbers from total error from which half passed through error and half passed to amplified and how to generate defect efficiency?
of elicitation methods
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
Explain a variable? "Variables" are data items in a program whose values can change.
Functions that dynamic testing tools supports: 1: Input setting: selecting of the test data that the test object reads when called. 2: Stub processing : handling output
Document interchange standards Interchange standards permit electronic documents to be exchanged mailed, etc. Documents are produced using dissimilar systems and on differe
The "user guide" is the similar as the user manual. The user guide is a document that shows information essential to employ a system or component to get the desired results. Typica
Describe Operational Testing? Ans) Testing done by the end user on software in its normal operating environment.
"Utility" is a software tool designed to perform some regularly used support function. For example, single utility is a program to print files.
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
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