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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 white-box, black-box and gray-box testing? White Box (or glass box) testing is the METHOD of giving i/p to the system and checking how the system processes i/p to prod
What is Benchmark? Ans) A Benchmark is a standard to calculate against.
SOFTWARE METRICS Measurement is fundamental to an engineering discipline and software engineering is no exception. Software metric is a quantitative measure which is derived fr
Give a complete example that how to tackle with it.
Question: You work with Mr Akshay Kapoor, Human Resource Manager of an IT Company called LTZ. Mr Kapoor is the Chairperson of the Human Resource Policy Committee. Other members
Q 1 Define a software process. How do software myths affect a software process? Ans: A Software process is a Coherent set of activities for designing, specifying, implementin
Special Value Testing: It is the form of functional testing. Special value testing happens when a tester uses his or her domain knowledge, experience with same program and informa
What is Transform mapping? The transform mapping is a set of design steps applied on the DFD in order to map the transformed flow characteristics into exact architectural style
Explain Metrics assumptions of Software metrics Software metrics A software property can be calculated. The relationship exists among what we can measure and what we
Objectives of Data dictionaries:- 1) A standard definition of every terms in a system that is each item of data is uniquely identified and defined. 2) Simple cross-referenci
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