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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 is Relationship Entities are associated to each other by relationships. It denotes how two entities are associated. A diamond notation with name of relationship signifi
It is possible to assign a local data object defined in a subroutine or function module to a field group. False.
Hello! It is being stated that i m the student of Software Engineering and i am in found of an innovative FYP idea ,that has not been implemented yet. kindly tell me some newer ide
Create a compound data type called Post to store messages posted on Google+. Post should include: Name / Data Type / Description date / char [9] / date fields for
Problem 1. Explain why the use of a standard high-level language does not guarantee that software will be portable across a range of machines 2. Draw possible data flow diag
Describe various types of Cohesion? i. Coincidentally cohesive -The modules in which the set I\of tasks are linked with each other loosely then these modules are called coincid
Distinguish between verification and validation. Verification refers to the set of activities that make sure that software correctly executes a specific function. Validation re
List the process maturity levels in SEIs CMM. Level 1: Initial - Few processes are explained and individual efforts are taken. Level 2: Repeatable - To track cost schedul
What does Validation represent? Validation shows the set of activities that ensure that the software that has been built is satisfying the customer needs.
What are the elements of Analysis model? i. Data Dictionary ii. Data Flow Diagram iii. Entity Relationship Diagram iv. State Transition Diagram v. Process specifica
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