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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.
The process of evaluating a program based on implementation of that program. Dynamic analysis approaches rely on implementing a piece of software with selected test data.
Define Software design. a. Software design is a step by step process through which requirements are translated into a "blue print" to construct the software. b. The blue pr
Communicational cohesion : Communicational cohesion is when parts of a module are grouped because they operate on the similar data (e.g. a module which operates on the similar reco
Discuss the design steps of the transform mapping. Re-examine the fundamental model. Re-examine and refine the DFD for the software. Determine the DFD has either the
Advantages of Re-Engineering:- 1) Reduced risk - there is a huge risk in new software development. There might be development problems, staffing problems and specification pro
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. A
Write short note on black box testing. The black box testing is also known as behavioural testing. This method fully focuses on the functional needs of the software. Tests are
What is Process and product quality? The quality of a developed product is influenced by the quality of the production process. This is significant in software development
Determine about Software Review - This is an evaluation method that includes the bringing together a group of technical personnel to examine a software artifact in order to imp
encoded micro instruction vs unecoded micro instruction
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