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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.
State the working of spiral model In spiral model, after every phase a review is performed regarding all products developed up to that point and plans are developed for the sub
Discuss in details about Functional Modeling. This model describes the computations that take part within a system. This model is helpful when the conversion from the inp
system architecture block diagram
What does it mean by software re-engineering ?
Explain Hybrid Testing? Ans) A mixture of top-down testing combined with bottom-up testing of prioritized or available components.
Describe system testing. System testing: System test are designed to authenticate a fully developed systems with a view to assuring that it meets its requirements. There
Draw the Context level DFD for the Safe home Software. User commands Alarm type Telephone Number tone Sensor status Display Information
How do you differentiate the roles of Quality Assurance Manager and Project Manager? Quality Assurance Manager (QA Manager) produces the process to be followed at every phase
What is V- Diagram (model)? Ans) A diagram that imagine the order of testing activities and their corresponding phases of growth
Q. What is Standard enforces? Standard enforces This tool is like a code inspector; expect that the rules are generally simpler. The main distribution is that a full-blown
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