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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 process maturity. In recent years there has been a major highlighting on process maturity. The Software Engineering Institute. (SEI) has developed a widespread model p
The roles of project stakeholders :- Offer resources (time, money, ...) to the project team Instruct developers about their business Be precise and specific about requir
What is VDD Ans) VDD- "version description document".
What is SEI capability maturity model? Initial Essentially uncontrolled Repeatable Product management procedures explained and used Defined Proc
Software project planning entails what activities?
Determine statement coverage and path coverage
State the technique Pilot used in software engineering With this approach, new system is introduced into one part of the company (for example into one warehouse of a supermark
Q. Explain Common coupling with example? Common coupling: General coupling is when two modules share the same global data (example a global variable). Changing of the shared
How a prototype can be categorised 1. A paper prototype which is a model depicting human machine interaction in a form which makes user understand how such interaction, would
What is Requirements Engineering Requirements engineering is systematic use of proven techniques, principles and language tools for cost effective analysis, on-going evaluatio
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