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Connect to and consume Azure services and third-party services →mediumMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is to configure a private endpoint for the Azure OpenAI service. This resolves the issue because the network ACLs in the ARM template restrict access to a specific IP range, and an Azure App Service without a public IP cannot match that range. A private endpoint injects the OpenAI service into the virtual network, allowing secure, private connectivity without relying on public IPs or insecure blanket allowances. On the AZ-204 exam, this scenario tests your understanding of how to secure PaaS services while integrating them with Azure resources that lack public endpoints—a common trap is to add the App Service’s outbound IPs, but those are dynamic and unreliable. The best practice is always to use private endpoints for service-to-service communication within a VNet. Memory tip: “Private endpoint, public problem solved”—if the resource has no public IP, think private endpoint first.

AZ-204 Practice Question: Connect to and consume Azure services and third-party services

This AZ-204 practice question tests your understanding of connect to and consume azure services and third-party services. 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

{
  "type": "Microsoft.CognitiveServices/accounts",
  "apiVersion": "2023-05-01",
  "name": "myopenai",
  "location": "eastus",
  "kind": "OpenAI",
  "sku": {
    "name": "S0"
  },
  "properties": {
    "customSubDomainName": "myopenai",
    "networkAcls": {
      "defaultAction": "Deny",
      "ipRules": [
        {
          "value": "203.0.113.0/24"
        }
      ]
    }
  }
}

Refer to the exhibit. An Azure OpenAI Service account is deployed with this ARM template. After deployment, a developer tries to call the OpenAI endpoint from an Azure App Service that has no public IP. The request is blocked. What change should be made to allow access?

Question 1mediummultiple choice
Full question →

Exhibit

{
  "type": "Microsoft.CognitiveServices/accounts",
  "apiVersion": "2023-05-01",
  "name": "myopenai",
  "location": "eastus",
  "kind": "OpenAI",
  "sku": {
    "name": "S0"
  },
  "properties": {
    "customSubDomainName": "myopenai",
    "networkAcls": {
      "defaultAction": "Deny",
      "ipRules": [
        {
          "value": "203.0.113.0/24"
        }
      ]
    }
  }
}

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

✓

Configure a private endpoint for the OpenAI account.

The network ACLs only allow a specific IP range. To allow an Azure service without a public IP, you should use a private endpoint (option D). Option A is correct but not listed; option B: changing defaultAction to Allow would allow all traffic, which is insecure. Option C: adding the App Service's outbound IP is not reliable due to dynamic IPs. Option D is the best practice.

Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Add a service tag for App Service in the ipRules.

    Why it's wrong here

    IP rules do not support service tags.

  • ✓

    Configure a private endpoint for the OpenAI account.

    Why this is correct

    Private endpoint allows secure access from Azure services via Microsoft backbone.

    Related concept

    Standard ACLs match source addresses.

  • ✗

    Change the defaultAction to Allow.

    Why it's wrong here

    Opens access to all traffic, security risk.

  • ✗

    Add the App Service's outbound IP address to the ipRules.

    Why it's wrong here

    Outbound IPs may change; not reliable.

Common exam traps

Common exam trap: ACLs stop at the first match

ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.

Detailed technical explanation

How to think about this question

ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.

KKey Concepts to Remember

  • Standard ACLs match source addresses.
  • Extended ACLs can match source, destination, protocol and ports.
  • The first matching ACL entry is used.
  • There is usually an implicit deny at the end.

TExam Day Tips

  • Check inbound versus outbound direction.
  • Read the ACL from top to bottom.
  • Look for a broader permit or deny above the intended line.

Key takeaway

ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

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.

What to study next

Got this wrong? Here's your next step.

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related AZ-204 ACL questions on filtering logic and placement.

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FAQ

Questions learners often ask

What does this AZ-204 question test?

Connect to and consume Azure services and third-party services — This question tests Connect to and consume Azure services and third-party services — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: Configure a private endpoint for the OpenAI account. — The network ACLs only allow a specific IP range. To allow an Azure service without a public IP, you should use a private endpoint (option D). Option A is correct but not listed; option B: changing defaultAction to Allow would allow all traffic, which is insecure. Option C: adding the App Service's outbound IP is not reliable due to dynamic IPs. Option D is the best practice.

What should I do if I get this AZ-204 question wrong?

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related AZ-204 ACL questions on filtering logic and placement.

What is the key concept behind this question?

Standard ACLs match source addresses.

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Last reviewed: Jun 20, 2026

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