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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.
Explain model-based expert systems and frame-based expert systems
Q. Show the cost drivers used in COCOMO model? A variety of attributes of cost drivers used in COCOMO model are: 1. Physical attributes : These are worried with required
Determine the concept of Concurrency The basic concept in computer programming is concept of handling more than one task at a time. Many programming problems need that the pro
Explain how to define Severity Rating in your project. Severity rating is a combination of three factors: - The frequency of the problem occurrence. It could be common / ra
identification need
What is a boundary value analysis? A boundary value analysis is a testing method in which the elements at the edge of the domain are selected and tested. It is a test case desi
What are the objectives of Analysis modeling? i. To explain what the customer needs. ii. To establish a basis for the creation of software design. iii. To devise a set of
Explain the Test Specification and Test Suite: - This is a document verifying the test approach for a software feature or combination or features and the inputs, predicted resu
Define the Load address for the first word of the program is known as Load address origin is called as a Load address for the first word of the program
Question: (a) Give three advantages of using mobile agents. (b) Distinguish between Static Itinerary Static Order (SISO) and Static Itinerary Dynamic Order (SIDO) mobility
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