PL-900 Practice Question: Demonstrate the capabilities of Power Automate
A company uses Power Automate to monitor a SharePoint document library for new files and then copy them to an Azure Blob Storage container. The flow runs successfully for PDF files but fails for large video files. What is the most likely cause?
⚠ Common exam trap
PL-900 often tests the assumption that connector failures are format-related — candidates pick 'connector cannot read video' instead of recognizing the size limit as the root cause.
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
✓
Power Automate has a file size limit that the video exceeds.
Power Automate has documented message size limits (e.g., 100 MB for some connectors, and lower limits for certain actions like SharePoint 'Get file content'). Large video files exceed these limits, causing the flow to fail even though PDFs work fine. The most likely cause is that the video file size exceeds the connector or action limit.
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 SharePoint connector cannot read video files.
Why it's wrong here
The SharePoint connector retrieves video files without format restriction; the failure arises from Power Automate's per-action message size and timeout limits on large payloads. The connector is correctly chosen when files stay within those limits, which is why PDFs succeed. Video size, not file type, triggers the error.
- ✗
The flow uses a 'Parallel branch' that cannot handle large files.
Why it's wrong here
Parallel branches run actions concurrently and impose no file-size limit; they are used to run independent steps simultaneously. The failure stems from the SharePoint connector's message size limit, which caps file transfers, so large videos exceed it while small PDFs pass.
- ✓
Power Automate has a file size limit that the video exceeds.
Why this is correct
Power Automate enforces a maximum file size for actions handling file content, so large video files exceed that limit while PDFs pass. The flow fails because the video's size breaches the platform's file size ceiling.
- ✗
Azure Blob Storage does not support video file formats.
Why it's wrong here
Blob Storage stores any binary format, including video, so format support is not the constraint. The failure stems from Power Automate's connector message-size limits, which truncate large payloads. Blob Storage's format-agnostic design is genuinely useful when staging arbitrary media, but it does not govern flow throughput here.
Quick reference
Azure Blob Storage Tier Comparison
| Tier | Storage Cost | Retrieval Cost | Latency | Use Case |
|---|---|---|---|---|
| Hot | Highest | Lowest | Immediate | Active data, frequent reads |
| Cool | Lower | Higher | Immediate | Data accessed < once / month |
| Cold | Lower still | Higher | Immediate | Data accessed < once / quarter |
| Archive | Lowest | Highest + rehydration delay | Hours | Long-term compliance retention |
Go deeper
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This PL-900 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 PL-900 exam.