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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 are the phases of Problem solving Loop? Problem definition identifies the problem to be resolved. Technical development helps to resolve the Problem through various Te
Manual testing is the part of software testing that needs operator input, analysis, or evaluation. or A manual testing is a testing for which there is no automation. Instead,
What is cardinality in data modelling? Cardinality in data modeling, cardinality verifies how the number of occurrences of one object is related to the number of occurrences of
What is architectural evolution? Architectural evolution is the practice of modifying a system from a centralized architecture to a distributed architecture like client server.
how 94 calculated
explain the data dictionery
Q. Consider a program which computes the square root of an input integer between 0 and 5000. Determine the equivalence class test cases. Determine the test cases using boundary val
Explain in detail the design concepts Abstraction Data abstraction Functional abstraction •Control abstraction Information hiding •Every module in the s
Q. Explain Test harness systems and Test archiving systems? Test harness systems: This is one that is bound around the test object and that permits the easy modification a
What are the common approaches in debugging? Brute force method: The memory dumps and run-time tracks are checked and program with write statements is loaded to get clues to er
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