hardMultiple SelectObjective-mapped
FC0-U71 A user is trying to choose a web browser Practice Question
A user is trying to choose a web browser. Which TWO features are considered advantages of using a browser with built-in developer tools? (Select TWO).
⚠ Common exam trap
It's easy for candidates to confuse general browser features (like sync or privacy) with the specific diagnostic and testing capabilities of built-in developer tools, leading them to select options that are useful but not developer-tool-specific.
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
✓
Ability to test how a website displays on different screen sizes
Built-in developer tools, such as those in Chrome DevTools or Firefox Developer Tools, include a device emulation mode that allows developers to simulate various screen sizes and resolutions. This enables testing of responsive web design without needing physical devices, ensuring the website displays correctly across smartphones, tablets, and desktops.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Automatic synchronization of bookmarks across devices
Why it's wrong here
Bookmark sync is a browser feature, not specifically part of developer tools.
- ✗
Enhanced privacy through blocking of pop-ups and trackers
Why it's wrong here
Pop-up blocking is a privacy feature, not part of developer tools.
- ✓
Ability to test how a website displays on different screen sizes
Why this is correct
Developer tools often include device emulation to test responsiveness.
- ✗
Improved page loading speed
Why it's wrong here
Loading speed is more dependent on network and server, not developer tools.
- ✓
Ability to inspect and modify the source code of a webpage
Why this is correct
Developer tools allow real-time inspection and modification of HTML/CSS/JS.
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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.