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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.
Q. What is Inheritance? Inheritance:- Inheritance is defined as the property of objects by which instances of a class can have access to data and programs contained in a previ
Question: The activities in a project are given the PERT chart below: a) Identify all activity dependencies in the project. b) Clearly distinguish between critical
QUESTION (a) Draw a use case diagram (UCD) for the given case study. For any one use case give a detail use case specification (b) Describe the different phases and workflow
Give the procedure of the Delphi method. 1. The co-ordinator shows a specification and estimation form to each expert. 2. Co-ordinator calls a group meeting in which the exp
Determine the Sanity testing - Sanity testing is used to ensure that conflicting or multiple functions or variables don't exist in system. - It verifies that components of
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A test method satisfying coverage criteria that needs each decision point at every possible branch to be implemented at least once.
a) An ER diagram for the system. Show all entities, relationships, cardinalities and optionalities. Also, include all intersection entities. You must use the Finkelstein method
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