Consistency is the predictability of response time and accuracy of data.
Users prefer to have consistent response times; they develop a feel for normal operating conditions. For example, if the "normal" response time is 3 seconds for printing to a network printer but a response time of over 30 seconds occurs, we know that there is a problem in the system!
Accuracy of data determines if the network is reliable! If a system loses data, then the users will not have confidence in the information and will often not use the system.
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