Question 357 of 988

Implement natural language processing solutions →hardMultiple ChoiceObjective-mapped

Quick Answer

The answer is the network ACLs blocking all traffic because no IP rules are defined. This is correct because the ARM template sets the `defaultAction` to `Deny` while leaving the IP rules array empty, which means the Language Service endpoint rejects every request by default, returning a 403 Forbidden error regardless of the caller’s identity or authentication. On the Microsoft Azure AI Engineer Associate AI-102 exam, this scenario tests your understanding of how network security configurations override other settings—many candidates mistakenly blame the SKU, subdomain, or resource kind, but the core concept is that a deny-all ACL takes precedence. A common trap is assuming that a valid API key or managed identity bypasses network restrictions; in reality, network ACLs are evaluated before authentication. Memory tip: “No IP rules + Deny default = 403 every call.”

AI-102 Practice Question: Implement natural language processing solutions

This AI-102 practice question tests your understanding of implement natural language processing 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

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "resources": [
    {
      "type": "Microsoft.CognitiveServices/accounts",
      "apiVersion": "2022-12-01",
      "name": "myLanguageService",
      "location": "[resourceGroup().location]",
      "sku": {
        "name": "S0"
      },
      "kind": "TextAnalytics",
      "properties": {
        "customSubDomainName": "mylanguageservice",
        "networkAcls": {
          "defaultAction": "Deny",
          "virtualNetworkRules": [],
          "ipRules": []
        }
      }
    }
  ]
}

Refer to the exhibit. You deploy this ARM template to create an Azure AI Language Service resource. After deployment, you try to call the Language Service API from your application but receive a 403 Forbidden error. What is the most likely cause?

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.

Question 1hardmultiple choice

Full question →

Exhibit

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "resources": [
    {
      "type": "Microsoft.CognitiveServices/accounts",
      "apiVersion": "2022-12-01",
      "name": "myLanguageService",
      "location": "[resourceGroup().location]",
      "sku": {
        "name": "S0"
      },
      "kind": "TextAnalytics",
      "properties": {
        "customSubDomainName": "mylanguageservice",
        "networkAcls": {
          "defaultAction": "Deny",
          "virtualNetworkRules": [],
          "ipRules": []
        }
      }
    }
  ]
}

A
The SKU S0 does not support API calls from applications
Why wrong: S0 supports API calls.
B
The resource kind is set incorrectly for Language Service
Why wrong: TextAnalytics is correct for Language Service.
C
The network ACLs block all traffic because no IP rules are defined
Deny default with no allowed IPs blocks all calls.
D
The custom subdomain name is invalid
Why wrong: The name is valid.

Full breakdown with real-world context →

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

✓

The network ACLs block all traffic because no IP rules are defined

The correct answer is A because the template sets 'defaultAction' to 'Deny' with no IP rules, blocking all network access. B (S0 SKU) supports API calls. C (custom subdomain) does not cause 403. D (kind) is correct for Language Service.

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.

✗
The SKU S0 does not support API calls from applications
Why it's wrong here
S0 supports API calls.
✗
The resource kind is set incorrectly for Language Service
Why it's wrong here
TextAnalytics is correct for Language Service.
✓
The network ACLs block all traffic because no IP rules are defined
Why this is correct
Deny default with no allowed IPs blocks all calls.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
The custom subdomain name is invalid
Why it's wrong here
The name is valid.

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 AI-102 ACL questions on filtering logic and placement.

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FAQ

Questions learners often ask

What does this AI-102 question test?

Implement natural language processing solutions — This question tests Implement natural language processing solutions — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: The network ACLs block all traffic because no IP rules are defined — The correct answer is A because the template sets 'defaultAction' to 'Deny' with no IP rules, blocking all network access. B (S0 SKU) supports API calls. C (custom subdomain) does not cause 403. D (kind) is correct for Language Service.

What should I do if I get this AI-102 question wrong?

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?

Standard ACLs match source addresses.

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Same concept, more angles

1 more ways this is tested on AI-102

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. You deploy an Azure AI Services resource using the ARM template shown in the exhibit. You need to test the Language service API from your local machine. What should you do first?

medium

A.Configure a managed identity for the resource
✓ B.Add your public IP address to the ipRules array in the networkAcls
C.Change the defaultAction to Allow
D.Use Azure CLI to enable the resource

Why B: The template sets network access to Deny with no IP rules, blocking all traffic. You must add your public IP address to the ipRules array to allow access. Disabling network ACLs globally or using managed identity won't help if network access is denied.

Last reviewed: Jun 20, 2026

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