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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.
Question: (a) Compare the following pairs of terms as used in object oriented software engineering: (i) Association and Association class (ii) Multiplicity and multiple
Explain Structure-based testing techniques - Structure-based testing methods are also termed as white-box testing techniques. - These are dynamic methods. - They use the
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What are dynamic testing tools? Dynamic testing tools: 1: coverage analyzers (execution verifiers 2: output comparators 3: Test data generators: 4: Test file gen
What are the characteristics of software measurement? Measured property Object of measurement Source of measure Purpose measurement Context of measurement.
Question 1 Discuss the impact of "information era" Question 2 Explain whether the linear sequential model of the software process is an accurate reflection of software developme
What are the properties of SRS? i. Correct - The SRS must be built up to date while appropriate requirements are identified. ii. Unambiguous - When the requirements are pro
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Define software measurement. A software measurement is a procedure or way that applies software measures to a class of software engineering objects to achieve a predefined goa
Maintain you are involved in a large project concerning the development of a patient management system for a hospital. You may opt for one of two plans. The first plan is to start
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