Practical Byzantine Fault Tolerance
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Questions and Answers

Which symposium did the text appear in?

  • Third Symposium on Operating Systems Design and Implementation (correct)
  • Fourth Symposium on Operating Systems Design and Implementation
  • First Symposium on Operating Systems Design and Implementation
  • Second Symposium on Operating Systems Design and Implementation

    • What is the name of the technique mentioned in the text that tolerates Byzantine faults?

  • Inefficient Byzantine Fault Tolerance
  • Theoretical Byzantine Fault Tolerance
  • Synchrony Byzantine Fault Tolerance
  • Practical Byzantine Fault Tolerance (correct)

    • What is the main drawback of most earlier work on Byzantine fault tolerance mentioned in the text?

  • They are too efficient to be used in practice
  • They demonstrate theoretical feasibility
  • They rely on known bounds on message delays and process speeds
  • They assume synchrony (correct)

    • Which systems mentioned in the text were designed to be practical but rely on the synchrony assumption for correctness?

    <p>Rampart and SecureRing</p> Signup and view all the answers

    What is the danger of relying on the synchrony assumption for correctness in the presence of malicious attacks?

    <p>It compromises the safety of a service</p> Signup and view all the answers

    True or false: The systems Rampart and SecureRing rely on the synchrony assumption for correctness.

    <p>True</p> Signup and view all the answers

    True or false: Most earlier work on Byzantine fault tolerance is too inefficient to be used in practice.

    <p>True</p> Signup and view all the answers

    True or false: The technique mentioned in the text that tolerates Byzantine faults is called Practical Byzantine Fault Tolerance.

    <p>True</p> Signup and view all the answers

    True or false: An attacker may compromise the safety of a service by delaying non-faulty nodes or the communication between them.

    <p>True</p> Signup and view all the answers

    True or false: The text appeared in the Proceedings of the Third Symposium on Operating Systems Design and Implementation in February 1999.

    <p>True</p> Signup and view all the answers

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