SC-200 Manage a security operations environment Practice Question
This SC-200 practice question tests your understanding of manage a security operations environment. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Exhibit
Refer to the exhibit.
```json
{
"properties": {
"displayName": "Block Tor IPs",
"description": "Blocks traffic from known Tor exit nodes.",
"ruleType": "Prevention",
"action": "Block",
"priority": 100,
"sourceAddress": ["138.197.0.0/16", "104.131.0.0/16"],
"destinationAddress": ["*"],
"sourcePorts": ["*"],
"destinationPorts": ["443", "80"],
"protocol": "TCP",
"direction": "Inbound"
}
}
```
You are a security analyst for a company that uses Azure Firewall. You are reviewing a custom rule deployed via Azure Firewall Manager. The exhibit shows the rule configuration. The rule is intended to block inbound traffic from known Tor exit nodes. However, a recent incident involved an attacker using a Tor exit node with IP 138.197.5.5 to access an internal web server on port 8080. The log shows the traffic was ALLOWED. What is the most likely reason the rule did not block the traffic?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Refer to the exhibit.
```json
{
"properties": {
"displayName": "Block Tor IPs",
"description": "Blocks traffic from known Tor exit nodes.",
"ruleType": "Prevention",
"action": "Block",
"priority": 100,
"sourceAddress": ["138.197.0.0/16", "104.131.0.0/16"],
"destinationAddress": ["*"],
"sourcePorts": ["*"],
"destinationPorts": ["443", "80"],
"protocol": "TCP",
"direction": "Inbound"
}
}
```
A
The destination port 8080 is not listed in the rule.
The rule only blocks ports 443 and 80, but the traffic used port 8080.
B
The source address range does not include 138.197.5.5.
Why wrong: The source address includes 138.197.0.0/16, which covers 138.197.5.5.
C
The rule type is 'Prevention' but should be 'Detection'.
Why wrong: Rule type Prevention is correct for blocking; Detection would only log.
D
The rule priority is too low and is overridden by a higher priority rule.
Why wrong: Priority 100 is numeric; lower number means higher priority. 100 is relatively high priority (i.e., evaluated sooner), but even if overridden, the rule would still be evaluated for matching ports.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The destination port 8080 is not listed in the rule.
The rule only blocks ports 80 and 443 (destinationPorts). The attacker used port 8080, which is not covered by the rule. Option C is correct. Option A is wrong because the source IP is within the rule's range. Option B is wrong because the rule is of type Prevention, not Detection. Option D is wrong because the priority is not necessarily too low; the rule would still be evaluated if the port matched.
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.
✓
The destination port 8080 is not listed in the rule.
Why this is correct
The rule only blocks ports 443 and 80, but the traffic used port 8080.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The source address range does not include 138.197.5.5.
Why it's wrong here
The source address includes 138.197.0.0/16, which covers 138.197.5.5.
✗
The rule type is 'Prevention' but should be 'Detection'.
Why it's wrong here
Rule type Prevention is correct for blocking; Detection would only log.
✗
The rule priority is too low and is overridden by a higher priority rule.
Why it's wrong here
Priority 100 is numeric; lower number means higher priority. 100 is relatively high priority (i.e., evaluated sooner), but even if overridden, the rule would still be evaluated for matching ports.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
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 SC-200 NAT questions on configuration and troubleshooting.
Manage a security operations environment — This question tests Manage a security operations environment — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The destination port 8080 is not listed in the rule. — The rule only blocks ports 80 and 443 (destinationPorts). The attacker used port 8080, which is not covered by the rule. Option C is correct. Option A is wrong because the source IP is within the rule's range. Option B is wrong because the rule is of type Prevention, not Detection. Option D is wrong because the priority is not necessarily too low; the rule would still be evaluated if the port matched.
What should I do if I get this SC-200 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 SC-200 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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