This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure 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.
Refer to the exhibit. You run these Azure CLI commands for an Azure Function app. When the app is accessed from https://app.contoso.com, what is the expected behavior?
Only GET requests are allowed
Why wrong: CORS doesn't restrict methods by default.
Requests from the allowed origin are accepted
CORS allows requests from https://app.contoso.com.
Requests are blocked because FTPS is required
Why wrong: FTPS is for deployment, not runtime requests.
All requests are blocked because no origins are allowed
Why wrong: One origin is allowed.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Requests from the allowed origin are accepted
The Azure CLI commands shown configure CORS (Cross-Origin Resource Sharing) for the Function App. The `az functionapp cors add` command adds `https://app.contoso.com` as an allowed origin, and `az functionapp cors show` confirms that this origin is in the allowed list. When a browser-based client at `https://app.contoso.com` makes a request to the Function App, the browser checks the `Access-Control-Allow-Origin` response header. Since the origin matches, the browser permits the request to proceed, and the Function App processes it normally. Therefore, requests from the allowed origin are accepted.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Only GET requests are allowed
Why it's wrong here
CORS doesn't restrict methods by default.
Requests from the allowed origin are accepted
Why this is correct
CORS allows requests from https://app.contoso.com.
Related concept
Read the scenario before looking for a memorised answer.
Requests are blocked because FTPS is required
Why it's wrong here
FTPS is for deployment, not runtime requests.
All requests are blocked because no origins are allowed
Why it's wrong here
One origin is allowed.
Common exam traps
The trap here is that candidates confuse CORS with authentication or authorization, assuming that adding an origin somehow restricts HTTP methods or enables FTPS, when in fact CORS only controls cross-origin browser access and does not affect direct server-to-server or non-browser requests.
Detailed technical explanation
CORS works by the browser sending a preflight `OPTIONS` request (for non-simple requests) to check the `Access-Control-Allow-Origin` header; the Azure Function App runtime automatically handles this based on the configured CORS list. Under the hood, the `az functionapp cors add` command updates the `cors` property in the site config, which is stored in the `Microsoft.Web/sites/config` resource. A common real-world scenario is a single-page application (SPA) hosted on a different domain needing to call the Function App API; without proper CORS, the browser blocks the response even if the server would accept it.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
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FAQ
Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Read the scenario before looking for a memorised answer..
The correct answer is: Requests from the allowed origin are accepted — The Azure CLI commands shown configure CORS (Cross-Origin Resource Sharing) for the Function App. The `az functionapp cors add` command adds `https://app.contoso.com` as an allowed origin, and `az functionapp cors show` confirms that this origin is in the allowed list. When a browser-based client at `https://app.contoso.com` makes a request to the Function App, the browser checks the `Access-Control-Allow-Origin` response header. Since the origin matches, the browser permits the request to proceed, and the Function App processes it normally. Therefore, requests from the allowed origin are accepted.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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