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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. Discuss some of the problems that are faced during maintenance of software? - Habitually another person or group of persons working over the years in isolation from each oth
describe normalization & its forms? plz i m very thankful.......
Practical process quality Explain process standards such as how reviews should be conducted, configuration management, etc. Monitor the development process to make sure that
Define the method of Direct changeover With this technique, old system is stopped and new system is used Straight away; - This method can be disastrous if new system fails
1) The relationship between characters or groups of characters independent of their meanings or the manner of their interpretation and use; 2) The formation of expressions in a
explain ring counter
Q. What do you mean by Polymorphism? Polymorphism:- Polymorphism includes the ability to use the same message to objects of different classes and have them behave differently.
Define a software process. How do software myths affect a software process? Software process is a Coherent set of activities for specifying, designing, executing and testing so
What are the reasons behind to perform white box testing? There are three main reasons behind performing the white box testing. 1. Programmers may have some incorrect assum
What is the meaning of Real time system? Real time system is a software system where the correct functionalities of the system are dependent upon results evaluated by the syste
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