Question 596 of 988

Implement computer vision solutions →mediumMultiple ChoiceObjective-mapped

AI-102 Implement computer vision solutions Practice Question

This AI-102 practice question tests your understanding of implement computer vision solutions. 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.

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "resources": [
    {
      "type": "Microsoft.CognitiveServices/accounts",
      "apiVersion": "2023-05-01",
      "name": "MyVisionService",
      "location": "[resourceGroup().location]",
      "sku": {
        "name": "S1"
      },
      "kind": "ComputerVision",
      "properties": {
        "customSubDomainName": "myvision",
        "networkAcls": {
          "defaultAction": "Deny"
        }
      }
    }
  ]
}

You deploy the above ARM template to create an Azure AI Vision resource. After deployment, you try to call the Vision 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 1mediummultiple choice

Full question →

Exhibit

Refer to the exhibit.

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "resources": [
    {
      "type": "Microsoft.CognitiveServices/accounts",
      "apiVersion": "2023-05-01",
      "name": "MyVisionService",
      "location": "[resourceGroup().location]",
      "sku": {
        "name": "S1"
      },
      "kind": "ComputerVision",
      "properties": {
        "customSubDomainName": "myvision",
        "networkAcls": {
          "defaultAction": "Deny"
        }
      }
    }
  ]
}

A
The network ACLs block all traffic by default
With defaultAction set to 'Deny', no traffic is allowed unless IP rules are added.
B
The apiVersion in the template is incorrect
Why wrong: The apiVersion 2023-05-01 is valid for Cognitive Services accounts.
C
The custom subdomain name is not configured correctly
Why wrong: The custom subdomain is configured in the template and should work.
D
The SKU 'S1' does not support API calls
Why wrong: S1 is a valid standard tier that supports API calls.

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 by default

The correct answer is that network ACLs are set to Deny by default, blocking all traffic. The template sets networkAcls.defaultAction to 'Deny', meaning no IP addresses are allowed unless explicitly added. Option A is wrong because the SKU S1 is valid. Option B is wrong because the custom subdomain is correctly configured. Option D is wrong because the apiVersion is valid.

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 network ACLs block all traffic by default
Why this is correct
With defaultAction set to 'Deny', no traffic is allowed unless IP rules are added.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
The apiVersion in the template is incorrect
Why it's wrong here
The apiVersion 2023-05-01 is valid for Cognitive Services accounts.
✗
The custom subdomain name is not configured correctly
Why it's wrong here
The custom subdomain is configured in the template and should work.
✗
The SKU 'S1' does not support API calls
Why it's wrong here
S1 is a valid standard tier that supports API calls.

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 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 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 computer vision solutions — This question tests Implement computer vision solutions — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: The network ACLs block all traffic by default — The correct answer is that network ACLs are set to Deny by default, blocking all traffic. The template sets networkAcls.defaultAction to 'Deny', meaning no IP addresses are allowed unless explicitly added. Option A is wrong because the SKU S1 is valid. Option B is wrong because the custom subdomain is correctly configured. Option D is wrong because the apiVersion is valid.

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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Last reviewed: Jun 20, 2026

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