Chapter 13 Quiz

Question

What is the meaning and differences of redundancy and diversity in a reliable system?

Answer

  • Redundancy. Where availability is critical (e.g. in e-commerce systems), companies normally keep backup servers and switch to these automatically if failure occurs.
  • Diversity. To provide resilience against external attacks, different servers may be implemented using different operating systems (e.g. Windows and Linux)
Topic revision: r3 - 2016-01-10 - JimSkon
 
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