The correct answer is that embedding the storage account key directly in the ARM template exposes a long-lived secret in plaintext, creating a critical security concern. This is because the AzureWebJobsStorage connection string, when hardcoded with the account key, can be compromised if the template is stored in source control, shared, or logged, granting an attacker full access to the storage account and violating the principle of least privilege. On the AZ-204 exam, this scenario tests your understanding of secure infrastructure as code practices, often appearing as a trap where candidates overlook the risk of plaintext secrets versus using managed identities or Key Vault references. A common memory tip is to think of ARM templates as code that should never contain keys—always use the `listKeys` function dynamically or reference Azure Key Vault. Remember: if you see a key in the template, it’s a security leak.
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute 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.
You are deploying an Azure Functions app using ARM template. The exhibit shows a portion of the template. You notice that the AzureWebJobsStorage connection string includes the account key directly. What is the MOST important security concern?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The storage account key is exposed in the template, which could be compromised.
Option C is correct because embedding the storage account key directly in an ARM template exposes a long-lived secret in plaintext. If the template is stored in source control, shared, or logged, the key can be compromised, granting an attacker full access to the storage account. This violates the principle of least privilege and security best practices for infrastructure as code.
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 FUNCTIONS_WORKER_RUNTIME is set to dotnet-isolated, which is outdated.
Why it's wrong here
dotnet-isolated is valid; this is not a security concern.
✗
The storage account name is hardcoded in the connection string.
Why it's wrong here
The account name is parameterized, not hardcoded.
✓
The storage account key is exposed in the template, which could be compromised.
Why this is correct
Hardcoding keys in templates is insecure; use managed identities or Key Vault.
Related concept
Read the scenario before looking for a memorised answer.
✗
The connection string does not use HTTPS.
Why it's wrong here
HTTPS is used by default; the issue is the hardcoded key.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often focus on superficial issues like hardcoded names or protocol strings, missing the fundamental security risk of embedding a secret (the account key) in plaintext within an ARM template.
Detailed technical explanation
How to think about this question
Under the hood, the AzureWebJobsStorage connection string is used by the Functions runtime to bind to the Azure Storage account for core operations like checkpointing, lease management, and queue triggers. Exposing the account key in an ARM template means anyone with read access to the template—or to deployment logs—can extract the key and authenticate to the storage account via Shared Key authorization (Authorization header with HMAC-SHA256). A more secure approach is to use managed identities with role-based access control (e.g., Storage Blob Data Contributor) and reference the connection string via the 'listKeys' function or Azure Key Vault references in the template.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 storage account key is exposed in the template, which could be compromised. — Option C is correct because embedding the storage account key directly in an ARM template exposes a long-lived secret in plaintext. If the template is stored in source control, shared, or logged, the key can be compromised, granting an attacker full access to the storage account. This violates the principle of least privilege and security best practices for infrastructure as code.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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