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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.
Behavioral Analysis Model The Behavioral analysis is an operational technique for all requirement analysis techniques. When a sensor event is recognized the software invokes
What is stepwise refinement? Stepwise Refinement:- Stepwise Refinement is a top-down design method originally proposed by Niklaus Wirth. A program is developed by successively
Q. Define Aggregation among objects? Aggregation between objects represents a relationship. It is a whole/part relationship. Aggregation may perhaps imply containment.
Application Design: Micro CDS/ISIS is a text oriented software package. It is a good , ho ice if one wishes to store textual data, retrieve the data by certain criteria, and d
Q. Facilitated Application Specification Technique? A team oriented approach is developed for needs gathering and is called facilitated application specification Techniques FAS
What is Code Coverage and Code Inspection - This is an analysis method which verifies which parts of the software have already been covered by the test case suite and which are
Instructions: For this assignment, you will be using stacks and queues to solve a maze in a couple of different ways. You are supplied with code to start you off. When run, it ope
Bottom-up approach, as the name suggests, is the differing of the Top-down method. This process begins with building and testing the low level modules first, working its way up
What are the benefits of horizontal partitioning? i. Software that is simple to test. ii. Software that is simpler to maintain. iii. Propagation of fewer side effects.
The company wants to offer an incentive of free shipping to those customers who have not returned for two months. Create a procedure named PROMO_SHIP_SP that determines who these c
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