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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.
State about the Elementary Modeling Techniques A model illustrating bare minimum requirements is known as Essential Model. It has two components: a) Environmental model B)
What is Failure-directed Testing Ans) Testing based on the information of the types of errors made in the earlier period that are likely for the system under test.
What are the common approaches in debugging? Brute force method: The memory dumps and run-time tracks are checked and program with write statements is loaded to get clues to er
Key process areas of Capability Maturity model (CMM) Effectiveness, Predictability and control of an organization's software processes are believed to get better as the organiz
four circumstances where incremental model is appropriate?
TASK A: Minitab analyses for Case Study task 3 (robustness for the filler flap design; TASK3.MTW) Describe an 8-run 2-level fractional factorial experiment to check the robustne
Describe Data dictionary ?
how to draw decosion table? questions based on decision table.
main characteristics of software lease
Mention some of the Design principles. The design process should not vary from tunnel vision. The design should not reinvent the wheel. The Design should exhibit unifo
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