350-701 Network Security Practice Question
Which statement accurately describes the difference between signature-based and anomaly-based intrusion detection?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Anomaly-based detection compares traffic against a baseline of normal behavior.
Signature-based detection matches known attack patterns; anomaly-based detects deviations from a baseline of normal traffic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Signature-based detection generates fewer false positives than anomaly-based detection.
Why it's wrong here
This is generally true, but the statement is not the best description of the difference.
- ✓
Anomaly-based detection compares traffic against a baseline of normal behavior.
Why this is correct
Correct. Anomaly-based detection establishes a baseline and flags deviations.
- ✗
Anomaly-based detection is more effective against known attacks than signature-based.
Why it's wrong here
Signature-based is better for known attacks; anomaly-based can detect unknown attacks but may have more false positives.
- ✗
Signature-based detection uses machine learning to identify unknown attacks.
Why it's wrong here
Signature-based detection relies on predefined patterns, not machine learning.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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