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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 the Prototyping Model In this model, a working model of actual software is developed originally. Prototype is just like a sample software having low reliability and les
What are 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 r
Q. What is Software requirement Specification (SRS)? Why is it important? List the characteristic of a good quality SRS? Ans: (SRS) Software Requirement Specification Documen
Determine the concept of Concurrency The basic concept in computer programming is concept of handling more than one task at a time. Many programming problems need that the pro
structured analysis
Define software process. Software process is explained as the structured set of activities that are needed to develop the software system.
Write short note on black box testing. The black box testing is also known as behavioural testing. This method fully focuses on the functional requirements of the software. Te
Bottom-up approach, as the name suggests, is the differing of the Top-down method. This process begins with building and testing the low level modules first, working its way up
The "user guide" is the similar as the user manual. The user guide is a document that shows information essential to employ a system or component to get the desired results. Typica
What are the characteristics of Software Software is engineered or formed; it is not manufactured in the classical sense. Software doesn't wear out. Although the indu
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