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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.
Phone Company (WLPC) is a provider of wireless phone service in the US with 100,000 customers serving mostly small markets. WLPC has just purchased additional airwaves in the US, C
Question 1 Explain black box and white box testing techniques Question 2 Explain different roles of the software development? Question 3 List out different project
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What is the utilisation of CMM? Capability Maturity Model is used in assessing how fine an organisation's processes permit to complete and manage latest software projects
A testing method that aids in selecting, in a systematic way, a high-yield set of test cases that logically relates causes to effects to produce test cases. It has a useful side ef
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Question 1: a) Describe the various activities and or processes related to the development of Information systems. b) Using a diagram, show the several development processes
Explain Cardinality & Modality ?
What are the different architectures developed during BPE? Data architecture àframework for the information needs of a business. Application architecture à incorporates the
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