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FC0-U71 Practice Question: A network technician is setting up a wireless…
A network technician is setting up a wireless network. To minimize interference from neighboring networks, which wireless frequency band is typically less congested?
⚠ Common exam trap
Many exam-takers assume 2.4 GHz is less congested because it has longer range, but they overlook that its limited non-overlapping channels and ubiquitous use by non-Wi-Fi devices (microwaves, Bluetooth) make it far more congested than 5 GHz.
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
✓
5 GHz
The 5 GHz band is typically less congested than the 2.4 GHz band because it has more non-overlapping channels (23 vs. 3) and is used by fewer devices, including legacy Wi-Fi clients. This reduces co-channel interference from neighboring networks, making 5 GHz the preferred choice for minimizing interference in dense wireless environments.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
900 MHz
Why it's wrong here
900 MHz is not a standard Wi-Fi frequency band.
- ✓
5 GHz
Why this is correct
5 GHz provides more channels and less interference.
- ✗
2.4 GHz
Why it's wrong here
2.4 GHz is widely used and often experiences interference.
- ✗
60 GHz
Why it's wrong here
60 GHz is used for WiGig, not typical for general Wi-Fi.
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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.