The answer is that the network ACLs block all traffic by default. This is correct because the ARM template for an Azure AI Services multi-service account includes a `networkAcls` property with `defaultAction` set to `Deny`, which explicitly denies all inbound traffic unless an IP rule or virtual network rule is configured to allow it. Since no such rules are present in the exhibit, developers’ local machines cannot reach the service, making network ACLs the most likely cause of the connectivity failure. On the Microsoft Azure AI Engineer Associate AI-102 exam, this scenario tests your understanding of how network ACLs control access to Azure AI services, often appearing as a trap where candidates overlook the default deny behavior or assume public endpoints are open. A common memory tip is to remember that “Deny is the default” for network ACLs in ARM templates—if you don’t see an explicit allow rule, traffic is blocked.
AI-102 Plan and manage an Azure AI solution Practice Question
This AI-102 practice question tests your understanding of plan and manage an azure ai solution. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Refer to the exhibit. You deploy an Azure AI Services multi-service account using this ARM template. After deployment, developers cannot access the service from their local machines. What is the most likely reason?
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.
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 ARM template for an Azure AI Services multi-service account includes a `networkAcls` property with `defaultAction` set to `Deny`. This configuration blocks all traffic by default, including requests from developers' local machines, unless an explicit IP rule or virtual network rule is added to allow access. Since no such rules are shown in the exhibit, the network ACLs are the most likely cause of the connectivity failure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 location is not specified correctly
Why it's wrong here
Location is inherited from resource group; it does not block access.
✗
The pricing tier S0 does not support network restrictions
Why it's wrong here
S0 tier supports network ACLs; the issue is the deny rule itself.
✗
The custom subdomain name is not globally unique
Why it's wrong here
Uniqueness affects endpoint resolution but not access once created.
✓
The network ACLs block all traffic by default
Why this is correct
'defaultAction': 'Deny' blocks all traffic unless explicitly allowed via IP rules or virtual networks.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Microsoft often tests the misconception that network ACLs only affect virtual network traffic or that they are optional by default, when in fact setting `defaultAction: Deny` explicitly blocks all traffic unless allow rules are configured.
Detailed technical explanation
How to think about this question
Azure AI Services network ACLs operate at the Azure Resource Manager level, using the `networkAcls` property to define IP rules and virtual network rules. When `defaultAction` is set to `Deny`, the service rejects all traffic that does not match an explicit allow rule, including traffic from public IPs not listed in `ipRules`. This is enforced by Azure's network security layer before any authentication (e.g., API keys or Azure AD tokens) is evaluated, meaning even valid credentials cannot bypass the ACL.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Plan and manage an Azure AI solution — This question tests Plan and manage an Azure AI solution — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The network ACLs block all traffic by default — The ARM template for an Azure AI Services multi-service account includes a `networkAcls` property with `defaultAction` set to `Deny`. This configuration blocks all traffic by default, including requests from developers' local machines, unless an explicit IP rule or virtual network rule is added to allow access. Since no such rules are shown in the exhibit, the network ACLs are the most likely cause of the connectivity failure.
What should I do if I get this AI-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This AI-102 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AI-102 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.