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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 requirement Specification (SRS)? Software Requirement Specification Document is the output of requirement examines stage of the software development life cycle
an isolated metal sphere has a radius r. when charged to a potential v, the charge on sphere is q. 1- state an expression, in terms of r and q, for potential v of sphere.
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 the role and functions of a Systems Analyst in the overall project development.
Problem: (a) Briefly describe the "water-fall" model of the system development life cycle. (b) How would intranets be useful in a Public Sector Environment? (c) How can p
Explain some of the limitations of testing. Though testing is an significant part of system development and leads to a valid, verified and efficient system, it also faces some
What is Parkinson's Law? Parkinson's Law states that work expands to fill the time available. The cost is fixed by available resources rather than by objective assessment.
Explain clearly the Agile Process Model
Explain in detail about the real time systems. Hard and soft real time systems. Real time and high performance. Real-Time control. Real time software design
Explain the Various phases of SDLC Various phases of SDLC are defined as below: Requirements Analysis Design Coding Software Testing Maintenance.
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