The answer is that the custom skill endpoint is using HTTP instead of HTTPS. Azure AI Search indexers enforce secure communication for all custom skill endpoints, including those hosted on Azure Functions, because the indexer processes sensitive data during enrichment and must protect it in transit. Even if the function responds correctly when tested directly via HTTP, the indexer will reject the connection and fail with a “skill cannot be executed” error. This scenario is a classic trap on the AI-102 exam: you must remember that the indexer’s security requirement overrides the function’s local accessibility. The exam tests your understanding of how Azure AI Search indexers handle custom skills, specifically the HTTPS requirement for the skill endpoint URI. A quick memory tip: think “Indexer enforces HTTPS—no exceptions,” or simply recall the mnemonic “Secure Skills, Secure Search” to avoid this common pitfall.
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. The indexer using this skillset fails with an error that the skill cannot be executed. The Azure Function is deployed and responds correctly when tested directly. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The skill endpoint is using HTTP instead of HTTPS.
Azure AI Search indexers that invoke custom skills via Azure Functions require the endpoint to use HTTPS. If the endpoint is configured with HTTP, the indexer will fail with a 'skill cannot be executed' error, even if the function itself works when tested directly. This is because the indexer enforces secure communication to protect data in transit.
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 context is set incorrectly to '/document'.
Why it's wrong here
Context is correctly set for document-level processing.
✗
The input source '/document/content' is invalid.
Why it's wrong here
If content exists, this is valid; would cause a different error if missing.
✓
The skill endpoint is using HTTP instead of HTTPS.
Why this is correct
Azure AI Search requires HTTPS for custom skill endpoints.
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 skill's output targetName does not match the index field.
Why it's wrong here
Would cause a field mapping error, not a skill execution failure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may assume a working function tested directly (often via HTTP) will work in the indexer, overlooking the indexer's strict HTTPS requirement for custom skill endpoints.
Detailed technical explanation
How to think about this question
Azure AI Search indexers use a secure channel (HTTPS) to invoke custom web API skills and Azure Functions. The indexer's skill execution engine rejects HTTP endpoints by default to prevent man-in-the-middle attacks and data leakage. When testing the Azure Function directly via a browser or tool like Postman, HTTP may work, but the indexer's security policy blocks it, resulting in the 'skill cannot be executed' error. This behavior is documented in the Azure AI Search custom skill requirements.
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.
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 skill endpoint is using HTTP instead of HTTPS. — Azure AI Search indexers that invoke custom skills via Azure Functions require the endpoint to use HTTPS. If the endpoint is configured with HTTP, the indexer will fail with a 'skill cannot be executed' error, even if the function itself works when tested directly. This is because the indexer enforces secure communication to protect data in transit.
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.
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