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Monitor, troubleshoot, and optimize Azure solutions →mediumMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is that the rule blocks traffic which does NOT originate from 192.168.1.0/24 or 10.0.0.0/8. This is because the custom rule uses the `negateCondition: true` property, which inverts the match logic: instead of allowing traffic from those source IP ranges, the WAF denies any request that falls outside them. On the Microsoft Azure Developer Associate AZ-204 exam, this concept tests your understanding of how WAF custom rule conditions and actions interact, often appearing in scenarios involving Front Door Premium and access restrictions. A common trap is assuming that a rule with specified IP ranges automatically allows them, but the negation flag flips the effect entirely. To remember this, think of the phrase “negate to block the rest”—when negation is true, the rule blocks everything except the listed ranges.

AZ-204 Practice Question: Monitor, troubleshoot, and optimize Azure solutions

This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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": {
    "ruleSet": [
      {
        "rules": [
          {
            "matchConditions": [
              {
                "matchVariable": "RemoteAddr",
                "operator": "IPMatch",
                "negateCondition": true,
                "matchValue": ["192.168.1.0/24", "10.0.0.0/8"]
              }
            ],
            "action": "Block"
          }
        ]
      }
    ]
  }
}
```

You have an Azure Front Door Premium instance with a Web Application Firewall (WAF) policy. The exhibit shows a custom rule. What is the effect of this rule?

Question 1mediummultiple choice
Full question →

Exhibit

Refer to the exhibit.
```json
{
  "properties": {
    "ruleSet": [
      {
        "rules": [
          {
            "matchConditions": [
              {
                "matchVariable": "RemoteAddr",
                "operator": "IPMatch",
                "negateCondition": true,
                "matchValue": ["192.168.1.0/24", "10.0.0.0/8"]
              }
            ],
            "action": "Block"
          }
        ]
      }
    ]
  }
}
```

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

✓

Blocks traffic that does NOT originate from 192.168.1.0/24 or 10.0.0.0/8

Option C is correct because the rule blocks requests that do NOT originate from the specified IP ranges (negateCondition: true). Option A is wrong because it allows those IPs. Option B is wrong because it blocks only those IPs. Option D is wrong because it allows all traffic, which is opposite.

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.

  • ✗

    Allows all traffic

    Why it's wrong here

    The rule blocks traffic, not allows.

  • ✗

    Blocks traffic from 192.168.1.0/24 and 10.0.0.0/8

    Why it's wrong here

    It blocks traffic that does NOT match these IPs.

  • ✓

    Blocks traffic that does NOT originate from 192.168.1.0/24 or 10.0.0.0/8

    Why this is correct

    NegateCondition true inverts the match, so the rule blocks non-matching IPs.

    Related concept

    Static NAT maps one inside address to one outside address.

  • ✗

    Allows traffic from 192.168.1.0/24 and 10.0.0.0/8

    Why it's wrong here

    NegateCondition true means the match condition is inverted.

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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.

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 AZ-204 NAT questions on configuration and troubleshooting.

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FAQ

Questions learners often ask

What does this AZ-204 question test?

Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: Blocks traffic that does NOT originate from 192.168.1.0/24 or 10.0.0.0/8 — Option C is correct because the rule blocks requests that do NOT originate from the specified IP ranges (negateCondition: true). Option A is wrong because it allows those IPs. Option B is wrong because it blocks only those IPs. Option D is wrong because it allows all traffic, which is opposite.

What should I do if I get this AZ-204 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 AZ-204 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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Last reviewed: Jun 20, 2026

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