The answer is that the resource is missing a dependsOn property for the parent site. This is the most likely issue because when deploying application settings via an ARM template, the Microsoft.Web/sites/config resource must explicitly declare a dependency on the parent Microsoft.Web/sites resource. Without this dependsOn property, Azure Resource Manager may attempt to apply the app settings before the App Service site has been provisioned, causing the settings to be silently ignored rather than applied. On the AZ-204 exam, this scenario tests your understanding of ARM template deployment ordering and resource dependencies, often appearing as a trap where candidates assume settings are applied automatically after site creation. A common memory tip is to think of the dependsOn as a "build order" rule: just as you cannot set a house’s thermostat before the house is built, you cannot set app settings before the App Service exists. Remember the mnemonic "Site First, Settings Second" to avoid this silent failure.
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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.
You are deploying an Azure App Service using an ARM template. After deployment, you find that the application settings are not applied. What is the most likely issue?
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 resource is missing a dependsOn property for the parent site
When deploying application settings via an ARM template, the 'Microsoft.Web/sites/config' resource (which contains the appsettings) must have a 'dependsOn' property referencing the parent 'Microsoft.Web/sites' resource. Without this dependency, Azure Resource Manager may attempt to apply the settings before the site exists, causing the settings to be silently ignored or not applied. This is a common deployment ordering issue.
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 resource is missing a dependsOn property for the parent site
Why this is correct
Without dependsOn, the config resource may be deployed before the site exists, causing failure.
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.
✗
The resource type should be 'Microsoft.Web/sites/appsettings'
Why it's wrong here
The correct type is 'Microsoft.Web/sites/config' with name 'appsettings'.
✗
The apiVersion is outdated, use '2021-02-01'
Why it's wrong here
The apiVersion '2022-09-01' is valid.
✗
The property 'MyApp:Setting1' uses a colon, which is not allowed
Why it's wrong here
Colons are allowed in setting keys.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often focus on syntax errors (like colons or resource types) rather than the implicit deployment ordering requirement, missing that the 'dependsOn' property is mandatory for child resources to ensure they are applied after the parent site exists.
Detailed technical explanation
How to think about this question
ARM templates use explicit dependencies via 'dependsOn' to enforce deployment order. Without it, Resource Manager may deploy resources in parallel or out of order, leading to race conditions. For 'Microsoft.Web/sites/config', the parent site must exist first because the config resource is a child resource that cannot be created independently. This is especially critical when using 'copy' loops or nested deployments where ordering is not guaranteed.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The resource is missing a dependsOn property for the parent site — When deploying application settings via an ARM template, the 'Microsoft.Web/sites/config' resource (which contains the appsettings) must have a 'dependsOn' property referencing the parent 'Microsoft.Web/sites' resource. Without this dependency, Azure Resource Manager may attempt to apply the settings before the site exists, causing the settings to be silently ignored or not applied. This is a common deployment ordering issue.
What should I do if I get this AZ-204 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.
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