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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.
Explain Quality control This includes checking the software development process to make sure that procedures and standards are being followed. There are two approaches to qu
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Question: (a) Describe with a pictorial representation ISO 12207 software development life cycle activities. (b) A public library is considering the implementation of
Q. What is Data Dictionary? Ans Data dictionary is a stockroom of data giving information about data. It is a list of terms as well as their definition for all data items a
CMM = 'Capability Maturity Model', now known as the CMMI ('Capability Maturity Model Integration'), developed by the SEI. It's a model of five levels of process 'maturity' that ver
Define Data objects, attributes & relationship. Data object: Illustration of any composite information that must be understood by a software. It can be any external entity. Att
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Q. What is Control coupling? Control coupling: Module A as well as B are said to be control coupled if they communicate by passing of control information. This is typically a
Write a report which critically analyses the system design process of a project. Projects might include designing a light rail network for a city, more environmentally-conscious bu
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