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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.
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I am working on DD development project and I am using 475 field communicator for testing DD. While development of DD, I tested DD with SDC 625 PC application using HART modem. I h
Function count:- It measures the functionality from the user point of view, that is, on the basis of what the user requests and receives in return. Therefore it deals with the fun
Name the techniques used in behavioural model In conventional approach of modeling, analyst collects great deal of comparatively unstructured data through data gathering tools
Test Case A test case is a unit level document describing the inputs, steps of implementation and the expected result of each test condition for each requirement from the BRD.
What are the Related data items Related data items captures details of related attributes. Range of values store total possible values of that data. Data structure definition c
ISO 9000 certification Quality standards and procedures should be documented in an organisational quality manual. An external body might be certify that an organisation's qu
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