Reliability - Reliability FAILSAFE...

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Reliability    
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    2 FAILSAFE Which article does this movie pertain to? What is the relationship to the Titanic? What  failed  in the actual scenario? Does this scenario still exist? What is at stake?
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    3 Preliminary Quiz… Preliminary Quiz… 1. To be considered a large system, a system today  must contain at least _____ lines of executable code. 2. The approximate number of errors found in every  1000 lines of executable source code during  development of a software system is _____.  3. The cost of owning and maintaining software is  typically _____ times as expensive as developing it.   4. Approximately what percentage of software systems  that begin development are finally completed?  5. Most errors found in software are the result of _____. http://www.csc.calpoly.edu/~jdalbey/crisis_quiz.html http://www.csc.calpoly.edu/~jdalbey/crisis_quiz.html
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    4 Critical Large-scale Computer  Systems are Everywhere    Air traffic control, medicine, nuclear power stations,  toxic chemical plants, financial systems, stock  markets, economic forecasting, communications  systems, global warming models and social policy,  spacecraft guidance and control,  missiles, battle  management and weapons systems , etc…   Though most software systems are NOT failures,  some dramatic cases on the contrary have been  disastrous (involving loss of life)
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  5 Definition of Reliability An attribute of any system that consistently  produces the same results, preferably meeting  or exceeding its specifications. The term may  be qualified, e.g 
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Reliability - Reliability FAILSAFE...

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