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CCNP Security IPS 642-627 Official Cert Guide by Keith Barker, Odunayo Adesina, David Burns

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Appendix D. Memory Tables Answer Key

Chapter 1

Security controls are classified in one of the following terms:

True positive: A situation in which a signature fires correctly when intrusive traffic for that signature is detected on the network. The signature correctly identifies an attack against the network. This represents normal and optimal operation.

False positive: A situation in which normal user activity triggers an alarm or response. This is a consequence of nonmalicious activity. This represents an error and generally is caused by excessively tight proactive controls or excessively relaxed reactive controls.

True negative: A situation in which a signature does not fire during normal user traffic on the network. The security control ...

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