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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.
Q. Explain the concept of bottom-up design? Bottom up design: This approach make possible a style of design where we decide how to combine these modules to provide larger ones
Test Build Managers deliver present software versions to the test environment, install the application's software and relate software patches, to both the application and the opera
Define Black box testing Black box testing Black-box test design care for the system as a "black-box", so it doesn't explicitly use knowledge of the internal structure. It ta
umbrella activiti
What are the benefits of horizontal partitioning? i. Software that is simple to test. ii. Software that is simpler to maintain. iii. Propagation of fewer side effects.
Quality Assurance Quality assurance is an activity that establishes and evaluates the processes that produce products. Quality assurance would calculate processes to identify w
User and System documentation with examples. User documentation having descriptions of the functions of a system without reference to how these functions are executed. Examples
Give the example of the mechanics of structured analysis
Q. Advantage of software life cycle model? The advantage of this model is the wide range of options to accommodate the good features of outer life cycle models. It becomes equi
what are the PEAS of E-mail agent
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