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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.
State Lehman's First law A program that is used in real world environment of necessity must change or become progressively less useful in that environment.
i have coursework on software management and dont know how to go about it. I want to find out if you will be able to help me on that. The task is to investgate(research informed pa
What are the common activities in design process? i. System structuring - The system is subdivided into principle subsystems components and communications among these subsy
give the example of data dictionary
Sir I need a Basic Ready made Time Line Chart for Online Shopping Management Project Because I have to submit the Project Report on 8 April 2013 So can u provide some urgent help n
Determine the meaning of vertical partitioning? Vertical partitioning often called factoring suggests that the control and work should be distributed top-down in program struct
How is software design different from coding ? Points of difference among software design and coding can be laid down as under: Design : 1. Design is most vital and t
What are the aims of Analysis modelling? i. To make apparent what the customer wants. ii. To set up a basis for the creation of software design. iii. To devise a set of v
Define in short the term software architecture ?
What are the demerits of spiral model? i. It is depends on customer communication. If the communication is not suitable then the software product that gets developed will not r
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