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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.
The following program will display an integral solution to the quadratic equation ax2+bx+c for integral values of a,b, and c, where a,c fall between 0 and 10, while b falls between
Q. How does the risk factor affect the spiral model of software development? Ans: Risk Analysis phase is the most vital part of Spiral Model. In this phase all probable (and
Define capability. What are the quantities that determine the degree of capability of a software reliability model? Capability refers to the ability of the model to calculate w
Software Engineering class assignment The design of the software. You must do 2 things: (1) report of the software design, (2) implement the software as per the design, and
What are the common activities in design process? i. System structuring - The system is subdivided into principle subsystems components and communications among these subsy
A walk-through is an informal meeting for informational purposes or evaluation.
What is Compatibility testing - It's a non-functional test performed on a software system or component for checking its compatibility with the other parts in computing environm
Q. Presume a program will experience a total of 200 failures. Preliminary failure intensity is 16 failure/ CPU hr. It has currently experienced 50 failures. Determine the following
What is architectural evolution? Architectural evolution is the method of changing a system from a centralized architecture to a distributed architecture as client server.
What is the work product of software design process and who does this? A design model that encompasses architectural, component level, interface and their representations is t
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