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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 the problems faced during software maintenance? The most significant problem during maintenance is that before correcting or else modifying a program the programmer
Question: (a) Describe the purpose and importance of a Document Type Definition in XML. (b) Describe the difference between PCDATA and CDATA with respect to a DTD. (c)
Ask What are the key elements of Business Model? question #Minimum 100 words accepted#
Q. Illustrate the Features of function count? Features:- Function point goes forward is independent of the language tools or methodologies used for implementation.
How do stubs and drivers are related to manual testing? - Drivers and stubs are a part of incremental testing. - The two different techniques used in incremental testing are
What is Process analysis and modelling? Process analysis The study of existing processes to understand the relationships among parts of the process and to compare them
Explain Static analysis? Ans) (1) Analysis of a program that is performed without implementing the program. (2)The process of assessing a system or component based on its for
Explain the purpose of checkpoints in Winrunner? Checkpoints help to compare behavior of current application to its previous version. There are total of four types of checkpoin
What is equivalence partitioning? Equivalence partitioning is a black box method that separates the input domain into classes of data. From this data test cases can be derived.
What is CMMI framework? The CMMI framework is the present stage of work on process assessment and improvement that started at the Software Engineering Institute in the 1980s.
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