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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 the working of Gantt charts - Gantt charts enable emailing of project/tasks info to others automatically - Gantt charts allow use of intranet/email facility to down
QUESTION - Time Synchronization (a) Why is computer clock synchronization of paramount importance? Give 2 business scenarios whereby time accuracy is critical? (b) Computers
short note on average manning
Define Behavioral Modelling The state transition diagram represents the behavior of a system by depicting its states and the events that cause the system to change state.
"Upwardly compatible software" is software that is compatible with a later or more difficult version of itself. For example, an upwardly compatible software is able to occur files
An application which is under development. How would you develop a test case for it? When application is under development, Business Requirement Document is used as primary doc
Question 1 A) If you are a software engineer you must be expert in the field of hardware, software and also database. It has been listed by the industry professionals that time a
Problem: (a) What do you understand by user-centred design and why is it important? (b) Explain how Prototyping and the Participatory Design approach are useful to the d
Why is maintenance of a software important? The alteration of a software product, after delivery, to correct faults, to improve performance or other attributes, or to adapt th
explain about transaction and transform mapping
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