FC0-U71 Infrastructure Practice Question
A user wants to connect an external monitor to their laptop. The monitor supports a resolution of 3840x2160 at 60Hz. Which of the following ports on the laptop would be BEST suited for this display?
⚠ Common exam trap
FC0-U71 often tests whether candidates know that HDMI 1.4 cannot do 4K at 60Hz — many assume 'HDMI supports 4K' without checking the version, and pick HDMI 1.4 over DisplayPort.
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
✓
DisplayPort
DisplayPort is the best choice because it natively supports 4K resolution at 60Hz and higher, with ample bandwidth (DisplayPort 1.2 offers 17.28 Gbps) to drive such a display without compression or chroma subsampling. It is designed specifically for high-resolution digital display connections and is standard on modern laptops and monitors. HDMI 1.4, while capable of 4K, is limited to 30Hz at that resolution, making it unsuitable for smooth 60Hz operation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
USB 3.0 Type-A
Why it's wrong here
USB 3.0 Type-A carries data and power but no native display signal, so it cannot drive a monitor without DisplayLink or similar conversion. It is tempting because USB ports are ubiquitous and USB-C with DisplayPort alt mode does output video, so Type-A would be the correct choice only for peripherals such as drives or keyboards.
- ✓
DisplayPort
Why this is correct
DisplayPort carries sufficient bandwidth for 3840x2160 at 60Hz over a single cable, satisfying the stem's resolution and refresh constraint. Older VGA is analogue and cannot support that resolution, while HDMI and USB-C variants may cap lower depending on version.
- ✗
VGA
Why it's wrong here
VGA transmits an analogue video signal, which cannot carry the digital data required for a 3840x2160 resolution at 60Hz; the maximum supported resolution for VGA is typically 1920x1080 at 60Hz. It is tempting because VGA is a legacy port still found on older laptops for connecting projectors or secondary monitors at standard resolutions, and would be the correct choice for a 1024x768 display.
- ✗
HDMI 1.4
Why it's wrong here
HDMI 1.4 caps 3840x2160 at 30Hz, so it cannot drive this monitor at 60Hz. It is tempting because HDMI is the common consumer display connector and works fine for 4K at 30Hz or 1080p at 60Hz, so it would be the correct choice for a lower-refresh 4K panel or standard HD display.
Go deeper
Related to this question
About these practice questions
One of 988 original FC0-U71 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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 September 2026 · checked against the official CompTIA exam blueprint
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.