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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.
State Lehman's First law. A program that is used in true world environment essentially must change or become progressively less useful in that environment.
What are CMMI model components? Process areas 24 process areas that are applicable to process capability and improvement are identified. These are organised int
Test Build Managers, System Administrators and Database Administrators deliver new software versions to the test environment, install the application's software and apply software
Define software reliability. What is the difference between hardware & software reliability? Ans: Software reliability is the possibility that software will provide failure-f
Question : (a) Discuss about Service Oriented Architecture (SOA), in terms of key principles, benefits and applicability. Also include examples of applications suitable for
#question2. Explain any ten CASE tools...
What are the Benefits of incremental model This model is acceptable when there is less number of person involved in the project. Technical risks can be handle with every
What is the meaning of requirement engineering? Requirement engineering defined as the process of setting up the services that the customer requires from the system and the co
Q. Illustrate key process areas of CMM? The key process areas of CMM are 1. Requirements management that establishes a common relationship between the customer and developer
What does Validation represent? Validation shows the set of activities that ensure that the software that has been built is satisfying the customer needs.
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