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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 software process model and waterfall model?
Q. What is Unit testing explain ? Unit testing: Unit testing is undertaken after a module has been coded and successfully reviewed. Unit testing (or module testing) is the te
Question: a) Draw a diagram showing the parts of an embedded system. b) Give the definition of an Embedded Computer. c) Discuss the similarities and differences between a
Question: (a) Explain the difference between a link and an association. Use a simple example to illustrate your answer. (b) Briefly describe the importance of CRC cards in
Question: (a) Describe fully the first five basic steps in software cost estimation. (b) What are the main differences between COCOMO1 and COCOMO2 cost estimation models?
When must a function throw an exception? A function must throw an exception when it's not able to fulfil its promise. As soon as function detects a problem which prevents it
Question 1: (a) Describe the Formal Software Process Model. (b) What are the main strengths of the Formal Software Process Model ? (c) Why is the Software Process Mode
Peripheral devices are irrelevant to the computer
What is software selection?
Difference between Verification and Validation Verification is Static whereas Validation is Dynamic. This means in Verification the s/w is inspected by looking into the code go
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