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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.
Ask Create an XML file with markup tags and some sample data to represent a list of invoices.
Types of coupling are:- A) Data coupling B) Stamp coupling C) Control coupling D) External coupling E)Common coupling F) Content coupling
Write about software change strategies. The software change methods that could be applied separately or together are: Software maintenance - The alters are made in the software
Implementing the program with all possible combinations of values for program variables. Feasible only for small, simple programs.
What is Branch coverage? Ans) Test coverage criteria which needs that for each decision point each possible branch be implemented at least once. Syn: decision coverage. Contrast
INFORMATION STORAGE AND RETRIEVAL SOFTWARE: IBM (International Business Machines Corporation) was one of the earliest to invest money to develop software packages intended fo
Explain a variable? "Variables" are data items in a program whose values can change.
Question: (a) With reference to component communication, explain the differences between interface oriented and message oriented communication in terms of communication method
Q. Why we need restructuring techniques? The restructuring helps in maintaining a program in the following ways: (a) Programs have higher excellence better documentation l
Q. Explain Iterative Enhancement model? This model incorporates modification in the software based on the analysis of the existing system. As well the complete documentation of
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