The answer is that the 5 GHz signal has weaker penetration through walls. This occurs because higher frequency radio waves, like those in the 5 GHz band, carry more data but are more easily absorbed and scattered by dense materials such as drywall, concrete, and wood, whereas the lower 2.4 GHz waves diffract and pass through obstacles more effectively, sacrificing speed for range and stability. On the CompTIA A+ Core 1 220-1201 exam, this question tests your understanding of the fundamental trade-offs between Wi-Fi frequency bands in real-world environments—a common trap is assuming that the faster band always provides better overall performance, when in fact its range and wall penetration are inferior. A helpful memory tip: think of 5 GHz as a sprinter—fast but easily blocked—while 2.4 GHz is a marathon runner, slower but able to push through barriers.
220-1201 Mobile Device Connection Methods Practice Question
This 220-1201 practice question tests your understanding of mobile device connection methods. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A user's laptop frequently disconnects from a 5 GHz Wi-Fi network when they move to a room two walls away from the access point. The 2.4 GHz network remains stable throughout the office. Which of the following best explains this behavior?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The 5 GHz signal has weaker penetration through walls.
The 5 GHz band offers higher speeds but shorter range and poorer penetration through walls compared to 2.4 GHz. This tests understanding of the trade-offs between Wi-Fi frequency bands in real-world environments.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The 5 GHz network is overloaded with users.
Why it's wrong here
Overload would cause slow speeds, not disconnection, and the 2.4 GHz network would likely be similarly affected.
✗
The laptop's Wi-Fi adapter is faulty.
Why it's wrong here
A faulty adapter would cause issues on both bands, not just 5 GHz.
✓
The 5 GHz signal has weaker penetration through walls.
Why this is correct
5 GHz signals attenuate more quickly through obstacles like walls, causing disconnections at a distance.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The access point is configured to prioritize 2.4 GHz traffic.
Why it's wrong here
Prioritization would not cause disconnection; it would affect bandwidth allocation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Similar concept trap
Overload would cause slow speeds, not disconnection, and the 2.4 GHz network would likely be similarly affected.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 220-1201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Mobile Device Connection Methods — This question tests Mobile Device Connection Methods — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The 5 GHz signal has weaker penetration through walls. — The 5 GHz band offers higher speeds but shorter range and poorer penetration through walls compared to 2.4 GHz. This tests understanding of the trade-offs between Wi-Fi frequency bands in real-world environments.
What should I do if I get this 220-1201 question wrong?
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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