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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.
Why testing is important with respect to software? A testing process focuses on logical internals of software ensuring that all statements have been tested and all are function
What are the Related data items Related data items captures details of related attributes. Range of values store total possible values of that data. Data structure definition c
Evolutionary Development model. Evolutionary Development Model : Evolutionary development model resembles iterative enhancement model. The similar phases as defined for the w
Database Definition: There are four basic steps involved in defining a database. They are: i) Creating a Field Definition Table (FDT) : The possible content of data recor
Problem : (a) What does a UseCase Diagram represent? (b) Draw a UseCase Diagram for the above case study. (c) For any one use case give a detail use case specification.
1. An orderly development of testing in which software elements, hardware elements, or both are joined and tested, to check out their interactions, unless the entire system has bee
What is Checksheet? Ans) A checksheet is the form used to record data as it is gathered.
Question: (a) Explain what is the resource discovery problem? (b) Distinguish between centralized (hybrid) and decentralized (pure) peer to peer network? (c) Give an e
Q. Explain the cost drivers and EAF of the intermediate COCOMO model? Ans. There are 15 different attributes described as cost drivers' attributes that determine the multiply
How to interpret software metrics(any metrics)...i need an example
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