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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.
Q. Usual stages of the simplified design process? Pre-production design Design brief it is an early often the beginning statement of design goals Analysis i
Hello, I have an assignment and have to derive a regular expression based on a CFG provided but i dont know how. please help.
i need solution manual for software engineering |10 edition by ian Sommerville
Explain CASE ?
Throw-Away Prototyping: Also known as close ended prototyping. Throwaway or Rapid Prototyping refers to the formation of a model that will eventually be discarded rather than beco
What are the prototyping approaches in software process? i. Evolutionary prototyping - In this approach of system development, the initial prototype is prepared and it is then
Problem: (a) Using a diagram, explain the four central concepts and the four phases of the Rational Unified Software Development Process. (b) Explain with an example what
What is COCOMO model? COCOMO stands for COnstructive COst MOdel. It is used for cost Effort=a * KDLOCb Where a and b are two parameters of the model whose specific values
Problem: a) Assume a washing machine. List all possible states of the washing machine. Draw a state diagram showing also the events triggering the change of states where poss
Explain the types of software testing. Unit testing Integration testing System testing User-acceptance testing End-to-End testing Exception testing
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