hardMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: A technician is diagnosing performance issues in…
A technician is diagnosing performance issues in a wireless network. Users report intermittent slowdowns. Which of the following is the MOST likely cause?
⚠ Common exam trap
Many exam-takers confuse 'intermittent slowdowns' with 'weak signal' or 'incorrect channel width,' but CompTIA emphasizes that interference from neighboring networks is the most common cause of sporadic performance issues in dense wireless environments.
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
✓
Interference from neighboring networks
Intermittent slowdowns in a wireless network are most commonly caused by co-channel or adjacent-channel interference from neighboring networks. Wi-Fi operates on shared, unlicensed spectrum (2.4 GHz and 5 GHz), and overlapping channels or high utilization from nearby access points force stations to wait for clear channel access, causing latency spikes and throughput drops. WPA2 encryption overhead is negligible for modern hardware, and weak signal or incorrect channel width would typically cause consistent, not intermittent, issues.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
WPA2 encryption overhead
Why it's wrong here
Encryption overhead is small and constant.
- ✗
Weak signal from the access point
Why it's wrong here
Weak signal causes constant slow speed, not intermittent.
- ✓
Interference from neighboring networks
Why this is correct
Interference can cause sporadic slowdowns.
- ✗
Incorrect channel width setting
Why it's wrong here
Channel width affects maximum speed but less likely intermittent.
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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.