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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 Execution Ans) The process of a computer getting out an instruction or instructions of a computer. Exhaustive Testing: Implementing the program with all possible combina
Smoke testing It decreases the integration risk. Error diagnosis and correction are simplified
Dear Sir/ Madam I have some remaining test questions need to be answered, from yesterday''s test bank can I get a solution please? Regards John
Q. Explain the Traces debugging method? Traces:-Printout contains merely certain memory and register contents and printing is conditional on some event occurring. Typical condi
Question: (a) With reference to component communication, explain the differences between interface oriented and message oriented communication in terms of communication method
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
When do you choose automated testing over manual testing? Automation is chosen when -A similar set of tests need to be repeated again and again -When a single test requi
You are preparing a bid for a refinery control system for Australian Petroleum Ltd (APL) using the CoCoMo 81 estimation model. You are familiar with industrial control system softw
The spiral model of software development Contains project risks evaluation during every iteration
Determine the meaning of vertical partitioning? Vertical partitioning often called factoring suggests that the control and work should be distributed top-down in program struct
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