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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.
Depth of conditional nesting This is a measure of the depth of nesting of if-statements in a program. Deeply nested if statements are hard to understand and are potentially er
what is waterfall model
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Q. Write short notes on Configuration Management? Software configuration management is a bunch of tracking and control activities that begin when a software project begins an
What are the various types of coupling? i. Data coupling - The data coupling is likely by parameter passing or data interaction. ii. Control coupling - The modules share c
What are the objectives of testing? i. Testing is a process of implementing a program with the intend of finding an error. ii. A good test case is one that has high probabi
What are the advantage and disadvantage of SRS?
List the principles of a software design. i. The design process should not suffer from "tunnel vision". ii. The design should be traceable to the analysis model. iii. The
What is Boundary value Analysis? Boundary value analysis is a method in software testing where tests are designed for showing boundary values. The values will be on the edge of
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