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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.
What is software metric? A Software metric is a easy quantitative measure derivable from any attribute of the software life cycle (E.g.) LOC (Line Of Code) Function poin
What are the types of metrics? Direct metrics - It refers to immediately measurable attributes. Example -Execution speed, Lines of code. Indirect metrics - It refers to the
QUESTION 1 (a) Suggest how the atomicity of EV1 "Request for estimate" could be improved (b) Document any five events listed above (Tip: state the actor, system agent, input
micro program control
Write down the SRC for "Add a node" Function Add node Description Adds a node to an existing design. Inputs Node type, Design Identifier, Node position Source
Q. What is the use of a data flow diagram? Explain the important concepts of data flow diagram. Ans. A data flow diagram is utilized to show the functional view of an applica
What do you understand by "Software Quality"? Quality software means, it's: - Free of bugs - Is easily maintainable - Within the budget - Meets requirements - De
What is meant by software change? Software change is termed as the change in nature of software as the requirements of software changes.
1) The process of operating a system or component under particular conditions, observing or recording the results, and making an evaluation of some aspect of the system or componen
Enginnering the product Because of complexity involved in software development, engineering approach is being used in software design. Use of engineering approach in area of re
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