200-201 Network Intrusion Analysis Practice Question
This 200-201 practice question tests your understanding of network intrusion analysis. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO actions are recommended when tuning IDS signatures to reduce false positives?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Modify signature thresholds to match typical traffic patterns
Options B and C are correct. Modifying thresholds and whitelisting known good behavior are standard tuning practices. Option A is too drastic. Option D is ineffective. Option E is a different solution.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Increase alert severity for all signatures
Why it's wrong here
That does not reduce false positives.
✗
Replace IDS with a next-generation firewall
Why it's wrong here
That is a different solution, not a tuning action.
✓
Modify signature thresholds to match typical traffic patterns
Why this is correct
Adjusting thresholds reduces false positives.
Related concept
Static NAT maps one inside address to one outside address.
✗
Disable signatures that generate frequent alerts
Why it's wrong here
Disabling may miss real attacks.
✓
Whitelist known good behavior
Why this is correct
Whitelisting reduces false positives for legitimate traffic.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-201 NAT questions on configuration and troubleshooting.
Network Intrusion Analysis — This question tests Network Intrusion Analysis — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Modify signature thresholds to match typical traffic patterns — Options B and C are correct. Modifying thresholds and whitelisting known good behavior are standard tuning practices. Option A is too drastic. Option D is ineffective. Option E is a different solution.
What should I do if I get this 200-201 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-201 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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