FC0-U71 Infrastructure Practice Question
A network administrator is designing a new office network. Which THREE factors should be considered when choosing between 2.4 GHz and 5 GHz Wi-Fi bands?
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
✓
Speed
2.4 GHz offers longer range and better penetration through walls but is more prone to interference. 5 GHz offers higher speeds but shorter range.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cellular compatibility
Why it's wrong here
Cellular uses different frequencies.
- ✓
Speed
Why this is correct
5 GHz offers higher speeds.
- ✓
Interference
Why this is correct
2.4 GHz has more interference from other devices.
- ✗
Number of devices
Why it's wrong here
Band selection does not directly limit device count.
- ✓
Range
Why this is correct
2.4 GHz has longer range.
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Same concept, more angles
1 more way this is tested on FC0-U71
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A network technician is troubleshooting intermittent Wi-Fi dropouts in a crowded office building. The office uses 2.4 GHz and 5 GHz dual-band access points. Users report better range but more interference on one band. Which frequency band is likely experiencing more interference?
hard- A.Both experience equal interference
- B.5 GHz
- ✓ C.2.4 GHz
- D.Neither band experiences interference
Why C: 2.4 GHz has longer range but more interference from devices like microwaves and Bluetooth, and has fewer non-overlapping channels.
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.