Practice Quiz

CompTIA Security+

Category - Compliance/Op

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When a device is set to “fail open” what will happen when a failure occurs?
  1. The device will completely block all traffic flow when a failure occurs.
  2. The device will not block any traffic when a failure occurs.
  3. The device will not block authorized traffic when a failure occurs.
  4. The device will block incoming traffic to a network when a failure occurs.
Explanation
Answer: B - A device set to fail open will allow all traffic in the event of a failure.

Key Takeaway: Care must be taken when configuring devices. Fail open is good if availability is a concern above all other concerns. However, if security is the biggest issue then fail open is probably not a good idea.
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