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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 waterfall model. Waterfall Model: The waterfall model is a sequential software development model, in which progress is seen as flowing steadily downwards (such a
Test Configuration Managers handles test environments, scripts, software and test data. Depending on the project, single person may wear more than single hat. For example, Test Eng
Define the factors of prime concern for system modeling Following four factors are of prime concern for system modeling: 1. System modeling is undertaken with some simplifyi
QUESTION Draw a class diagram which represents the information handled by the Online Bakery-equipments Ordering System. Your class should briefly and simply reflect the relatio
What is Test phase? Ans) The time period in the software life cycle in which the parts of a software product are evaluated and integrated, and the software product is evaluated
What is the meaning of System Engineering? System Engineering means designing, deploying, implementing and operating systems which include hardware, software and user.
A consistent measure of software size based on user needs.
What are the tools are mainly used for information gathering 1. Record review: A review of recorded documents of organisation is performed.Manuals procedures, forms and book
Q. Show the Advantages of Total Quality Management? Improves reputation-problems and faults are sorted quicker and spotted (zero defects) Higher employee morale- wo
Q. Use of Test file generators in software engineering? Test file generators This creates a file of information that is used as the program and does so based on comments give
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