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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.
An integration testing methods that tests the high-level components first using stubs for lower-level known as components that have not yet been integrated and that stimulate the n
Q. For the program given below, calculate the values of software science measures like ? , N, V, E and λ . int. sort (int x[], int n) { int i, j, save, im1; /
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Explain in detail the design concepts Abstraction Data abstraction Functional abstraction •Control abstraction Information hiding •Every module in the s
What are the various types of coupling? i. Data coupling - The data coupling is likely by parameter passing or data interaction. ii. Control coupling - The modules share c
I have to make assets for the design that i have done for the website but i dont know how to do it can you please help me?
Problem 1: Describe briefly on the seven stages in a product life cycle. Problem 2: What do you meant by SSAD? Explain in detail. Problem 3: What is a predictiv
A manual testing [error detection] method where program [source code] logic [structure] is traced manually [mentally] by a group with a small set of test cases, whereas the state o
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Software restructuring Software restructuring changes source code and / or data an effort to make it amenable to future changes. In general, restructuring does not change the o
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