AI-103 Computer Vision Practice Question
You are developing a script to query a Custom Vision prediction endpoint. Which HTTP header must be included to authenticate your request using an API key?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Prediction-Key
Custom Vision prediction and training APIs authenticate using the `Prediction-Key` or `Training-Key` header respectively (or `Ocp-Apim-Subscription-Key`).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Authorization: Bearer
Why it's wrong here
Bearer tokens are used for Azure AD / Entra ID token authentication, whereas Custom Vision uses subscription keys by default.
- ✗
X-Auth-Token
Why it's wrong here
This is not a standard Azure AI header.
- ✗
Vision-Api-Key
Why it's wrong here
Vision-Api-Key is not the correct header name.
- ✓
Prediction-Key
Why this is correct
Custom Vision prediction endpoints require the Prediction-Key header (or Ocp-Apim-Subscription-Key).
About these practice questions
This AI-103 question is part of Courseiva's 510-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Microsoft exam blueprint
This AI-103 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-103 exam.