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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.
Equivalence class testing Equivalence class testing is based on partitioning the input domain of a program into a number of equivalence classes so that the test of a representa
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Q. What is stepwise refinement? Stepwise Refinement:-Stepwise Refinement is a top-down design strategy initially proposed by Niklaus Wirth. A program is developed by consecutiv
Define Data Flow Diagram. A Data flow diagram is a graphical description that depicts information flow & the transforms that are applied as data move from input to output. T
What are the guidelines for data design? i. Use systematic analysis on data. ii. Find data structures and related operations. iii. Prepare data dictionary. iv. Use inf
"Utility" is a software tool designed to perform some regularly used support function. For example, single utility is a program to print files.
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Hoosier Burger''s food ordering system dfd and data dictionary
Q. Explain Information Flow index? Information Flow index Information flow metrics are practical to the components of a system design. For any component A We are able to defi
What are Quality plans? Quality plan structure Product plans; Product introduction; Process descriptions; Quality goals; Risks and risk management.
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