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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 is the difference between Test Plan and Master Test Plan. Master Test Plan - i.) It is mandatory in all projects. ii.) It provides strategy to be used to test the
Construct an E-R Diagram for the application described on the next page. Include any additional assumptions you made about the application requirements. The assumptions may not dir
Parallel/audit testing is testing where the user reconciles the output of the latest system to the output of the present system to determine the new system performs the operations
User and System documentation with examples. User documentation having descriptions of the functions of a system without reference to how these functions are executed. Examples
classification of computer application
system development life cycle security
Q. A supermarket requires to develop software to encourage regular customers. For this the customer requires to supply his name address telephone number and driving license number.
What are the various types of traceability in software engineering? i. Source traceability - These are basically the links from requirement to stakeholders who propose these
what effect does memory have on dma? what about on board cache? how much are the system buses available?
Define the Minimum cardinality of a relationship Minimum cardinality of a relationship is the minimum number of instances of second entity (student, in this case) with every in
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