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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.
Level 5 KPAs 1)Defect Prevention (DP): It discovers causes of defects and devises techniques which prevent them from recurring. 2)Technology Change Management (TCM): It
Present an evaluation of the current performance of your chosen company using ROCE, RI, EVA and SVA. (All figures employed should be up to date , clearly explained / justified an
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describe process
You are to create a decision table to help you decide what to do for the day. If it is a weekday and it is not a holiday, then you go to work. However, if it is a weekday and it
What is a process modelling and management tool?
Question: a) Discuss which communication method/s you would use in the following situations. Justify your answer. i. Congratulating an employee on obtaining a promotion.
Explain in detail about data modeling Data modeling creates use of the ERD. Having of 3 interrelated information. The data object. Relationships. Attributes
Waterfall is a model of the software development process in which the idea phase, requirements phase, design phase, execution phase, test phase, installation phase, and checkout ph
What is Prototype Prototype is developed so that customers, developers and users can learn more about problem. Hence prototype serves as a mechanism for identifying software r
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