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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.
Define Requirement Engineering . Requirement Engineering is a process in which all of the activities required to maintain and create a system requirements document. The four
Some Important Steps while doing performing testing The below objectives are to be kept in mind when performing testing: i) It should be done with the intention of finding
Describe the various types of coupling? i. Data coupling - The data coupling is possible by parameter passing or data interaction. ii. Control coupling - The modules share c
Explain SDLC ? Ans) SDLC-( software development life cycle) is an acronym.
Q. Define Repeated inheritance and Encapsulation? Repeated inheritance If a class inherits in excess of once from the same class then it is referred to as repeated inherit
Define software measurement. A software measurement is a method or method that applies software calculates to a class of software engineering objects to attain a predefined goa
Q. Important issues related to SRS? (a) System goals as well as requirements are different- Goal is a more general characteristics. For example Whole system must be designed in
Define in brief about sandwich testing ?
What are the benefits of smoke testing? Integration risk is decreased. The quality of the end-product is getting better. Error diagnosis and correction are simplified. Assessme
Define process maturity in short?
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