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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.
What is Fault Tree Analysis? Ans) A form of safety examines that assesses hardware safety to give failure statistics and sensitivity analyses that point to the possible effect o
What is performance testing? Performance testing is intended to test the run-time performance of software within the context of an integrated system.
Software Quality Assurance and Software Quality Control SQA verifies if the process that is followed to form a product is effective and does not have process defects while SQC
Question: (a) Compare the following pairs of terms as used in object oriented software engineering: (i) Association and Association class (ii) Multiplicity and multiple
Determine statement coverage and path coverage
Q. Explain Equivalent size measure software metrics? Equivalent size measure:- Models makes no distinction between a new software and the portion being reused. The equivalent
Q. Explain the concept of Top down design? Top down design: A top down design approach begins by identifying the major modules of the system decomposing them into their lower
What is Benchmark? Ans) A Benchmark is a standard to calculate against.
Q. Define Aggregation among objects? Aggregation between objects represents a relationship. It is a whole/part relationship. Aggregation may perhaps imply containment.
What are the causes behind to perform white box testing? There are three main reasons behind performing the white box testing. 1. Programmers may have some incorrect assumpt
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