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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.
Equivalence class: -It shows a set of valid or invalid states for input conditions. An input condition is either a particular numeric value, a range of values, a set of related val
Question 1: We have a small system with a call graph as given below. Consider that each vertex is a module. All modules are new (i.e., n = n0) Also consider that the number of
What are the approaches of integration testing? The integration testing can be carried out using two approaches. 1. The non-incremental testing. 2. Incremental testing.
What is equivalence partitioning? Equivalence partitioning is a black box method that separates the input domain into classes of data. From this data test cases can be derived.
how can i display shapes with asterisks
What are the testing principles the software engineer must apply whereas performing the software testing? i. All tests should be traceable to customer requirements. ii. Test
Question 1 Explain Iterative Development Model in detail Question 2 Describe the Object Interface Design Question 3 Explain why it is important to describe softwar
Write short notes on estimation models. Empirical estimation models can be used to complement decomposition techniques and present a potentially important approach in their own
Q. Explain throw-away prototyping and evolutionary prototyping. Discuss the differences between the two. Ans Throw-Away Prototyping as well called close ended prototyping .
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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