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FC0-U71 Practice Question: That a web application fails to load in a browser
A user reports that a web application fails to load in a browser. The IT technician suspects a compatibility issue. Which TWO actions should the technician take to diagnose the problem?
⚠ Common exam trap
Test-takers frequently confuse general troubleshooting steps (clearing cache or reinstalling) with targeted diagnostic actions for compatibility issues, leading them to pick options that are too broad or unrelated to the specific symptom.
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
✓
Check the browser console for error messages.
The browser console displays JavaScript errors, network request failures, and other runtime issues that can prevent a web application from loading. Checking the console is a direct diagnostic step to identify compatibility problems, such as unsupported APIs or deprecated features. Option C is correct because testing the application in a different browser isolates whether the issue is browser-specific, which is a common compatibility troubleshooting technique.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reinstall the web browser application.
Why it's wrong here
Reinstalling is a last resort, not an initial diagnostic step.
- ✓
Check the browser console for error messages.
Why this is correct
The console shows JavaScript and network errors relevant to web application failures.
- ✓
Test the application using a different web browser.
Why this is correct
Testing in another browser helps isolate whether the issue is browser-specific.
- ✗
Clear the browser cache and cookies.
Why it's wrong here
Clearing cache is a potential fix but not a diagnostic step.
- ✗
Update the operating system to the latest version.
Why it's wrong here
Updating the OS may resolve underlying issues but is not a direct diagnostic step for a browser-specific problem.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 practice question is part of Courseiva's free CompTIA 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 FC0-U71 exam.