FC0-U71 Infrastructure Practice Question
A network technician is troubleshooting a slow wireless connection in a crowded office. The office uses many Wi-Fi networks and devices. Which Wi-Fi standard would be best to minimize interference and provide faster speeds?
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
✓
802.11ax (Wi-Fi 6)
802.11ax (Wi-Fi 6) is the latest standard, designed to handle dense environments with less interference and higher throughput compared to older standards like 802.11ac.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
802.11g
Why it's wrong here
802.11g is outdated and slow.
- ✗
802.11n (Wi-Fi 4)
Why it's wrong here
Wi-Fi 4 is even older and slower.
- ✓
802.11ax (Wi-Fi 6)
Why this is correct
Wi-Fi 6 offers better performance in dense deployments.
- ✗
802.11ac (Wi-Fi 5)
Why it's wrong here
Wi-Fi 5 is older and less efficient in crowded environments.
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Same concept, more angles
5 more ways 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 company is setting up a new branch office. The network administrator needs to choose a wireless standard and a frequency band. Which TWO of the following options would provide the fastest speeds and least interference? (Select TWO.)
medium- ✓ A.5GHz
- B.2.4GHz
- ✓ C.802.11ax
- D.802.11ac
- E.Bluetooth
Why A: 802.11ax (Wi-Fi 6) is the latest standard, and 5GHz offers faster speeds and less interference than 2.4GHz.
Variation 2. A company wants to deploy a new wireless network in its office. The network must support high device density and minimize interference from neighboring networks. Which Wi-Fi standard and frequency band combination is most suitable?
medium- A.802.11n on 5GHz
- B.802.11ax on 2.4GHz
- ✓ C.802.11ax on 5GHz
- D.802.11ac on 2.4GHz
Why C: 802.11ax (Wi-Fi 6) on 5GHz provides faster speeds, better efficiency in dense environments, and less interference than 2.4GHz.
Variation 3. A technician needs to install a wireless network in a large warehouse. The goal is to minimize interference and support many devices. Which frequency band is best for this scenario?
medium- ✓ A.5 GHz
- B.60 GHz
- C.900 MHz
- D.2.4 GHz
Why A: 5 GHz offers less interference and more channels, ideal for crowded environments with many devices. 2.4 GHz has more interference and slower speeds.
Variation 4. A user is experiencing slow Wi-Fi performance at home. The router supports both 2.4GHz and 5GHz bands. Which frequency band would provide faster speeds but shorter range?
medium- A.NFC
- B.2.4GHz
- C.Bluetooth
- ✓ D.5GHz
Why D: The 5GHz band offers higher speeds but has shorter range and is less prone to interference compared to 2.4GHz.
Variation 5. A user's home wireless network is experiencing interference. Which frequency band is more prone to interference from devices like microwaves and cordless phones?
medium- A.60 GHz
- B.5 GHz
- C.900 MHz
- ✓ D.2.4 GHz
Why D: The 2.4 GHz band is more crowded and prone to interference from common household devices, while 5 GHz offers less interference.
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.