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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 resources are used when a thread is created ?
List any three characteristics of a good SRS. The SRS should be: Correct , Unambiguous, Complete 1. Correct: An SRS is correct iff every requirement stated therein is one
Q. Discuss the problems faced during software maintenance? The most significant problem during maintenance is that before correcting or else modifying a program the programmer
Problem: (a) Briefly explain the requirement capture methods. (c) Using examples, write short notes on the following: i) Aggregation ii) Composition iii) Generalisation
Explain Hybrid Testing? Ans) A mixture of top-down testing combined with bottom-up testing of prioritized or available components.
Q. What do you mean by Core dumps? Core dumps are a repairing technique. A printout of all applicable memory locations is obtained and studied. All dumps must be well documente
Explain the Structured Requirements Definition Structured Requirements definition is an approach to perform study about complete system and its various sub-systems, external ou
explain delphi model
Structured Analysis Model Structured analysis is the most broadly used of requirements modeling techniques relies on flow modeling and data modeling to established t
Bottom up design: This design leads to a style of design where we decide how to join these modules to give larger ones; to combine those to give even larger ones, and so on, till
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