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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.
Discuss any two software characteristics. Software is not manufactured : The life of software is from method exploration to the retirement of the software product. It is one t
Q Calculates function point value for a project with the following domain characteristics: No. of I/P = 30 No. of O/P = 62 No. of user Inquiries = 24 No. of fil
Dynamic and static metrics Dynamic metrics are closely related to software quality attributes It is relatively easy to measure the response time of a system (performance
Q. What is Test data generators? This is a difficult one as well as at least for the present is one for which no general solution exists. One of the practical problems with te
How can we re-engineering of any product One additional difficulty in adopting this approach is large investment which exists in software system maintenance. It requires additi
When to Re-Engineer? When the system alter are mostly confined to part of the system then re-engineer that part. When hardware or software support becomes obsolete.
What are the elements of design model? i. Data design ii. Architectural design iii. Interface design iv. Component-level design
What is Risk Assessment? Ans) A associated impact and its comprehensive evaluation of the risk
how to save image of a dialog box by using c++
Overview In this assignment, your program will simulate protein synthesis from DNA. Speci_cally, it reads a DNA string from a file specified on the command line, synthesizes th
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