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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. Explain Test archiving systems? Test archiving systems: the goal is to keep follow of series of tests ant to act as the basis for documenting that the tests have been done
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What is statement coverage? Statement coverage is the testing to test each statement in the code has been executed at least once.
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What is meant by Throw away Prototyping? Giving the user a system which is incomplete and then changing and augmenting it as the user requires become clear. The objective
Define software testing? Software testing is a critical element of software quality assurance and shows the ultimate review of specification, design, and coding.
Define software scope. The first software project management activity is the determination of software scope. Scope is defined answering the following questions. Context: Wh
What qualities would you look for when hiring a test engineer? - Test to break attitude - Desire for quality and attention to details. - Tact and diplomacy when dealing w
After studying the module you should understand the principles and techniques associated with modular software development. After studying the module you should understand the c
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