- A
Replace the access point with a higher-gain antenna.
Why wrong: Higher-gain antennas improve range in one direction but may not penetrate concrete walls effectively.
- B
Install a wireless repeater in the next room.
Why wrong: A repeater can extend range but often halves throughput and may still struggle with concrete walls if placed poorly.
- C
Deploy a mesh Wi-Fi system with nodes in each room.
Mesh systems use multiple nodes to create a seamless network, overcoming obstacles by placing nodes closer to clients.
- D
Switch the client to 2.4 GHz only.
Why wrong: This works but is a workaround, not a solution for utilizing 5 GHz speeds throughout the house.
Question 530 of 1,020
Solving 5 GHz Wi-Fi Dropout Through Thick Walls
This 220-1201 practice question tests your understanding of wireless networking technologies. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 client reports that their 5 GHz Wi-Fi connection works fine near the access point but drops out completely when they move to the next room, which has thick concrete walls. The 2.4 GHz band works throughout the house. Which of the following is the BEST solution?
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.
Quick Answer
The answer is to deploy a mesh Wi-Fi system with nodes in each room. This is correct because 5 GHz signals attenuate significantly more through obstacles like thick concrete walls compared to 2.4 GHz, causing the dropout you described. A mesh system overcomes this by placing multiple nodes that relay the signal between rooms, effectively bypassing the wall’s attenuation and extending seamless coverage. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of wireless frequency propagation and the practical solution for signal penetration issues—a common trap is to suggest a range extender, but mesh nodes provide a more stable, dedicated backhaul. Remember the memory tip: “5 GHz is fast but fragile; mesh nodes patch the gaps.”
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
✓
Deploy a mesh Wi-Fi system with nodes in each room.
A mesh Wi-Fi system (Option C) is the best solution because it uses multiple nodes that communicate wirelessly to create a unified network, overcoming signal attenuation caused by thick concrete walls. Unlike a single access point or repeater, mesh nodes are placed in each room to ensure strong 5 GHz coverage by relaying traffic through dedicated backhaul channels, mitigating the high-frequency signal loss that occurs through dense materials.
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.
- ✗
Replace the access point with a higher-gain antenna.
Why it's wrong here
Higher-gain antennas improve range in one direction but may not penetrate concrete walls effectively.
- ✗
Install a wireless repeater in the next room.
Why it's wrong here
A repeater can extend range but often halves throughput and may still struggle with concrete walls if placed poorly.
- ✓
Deploy a mesh Wi-Fi system with nodes in each room.
Why this is correct
Mesh systems use multiple nodes to create a seamless network, overcoming obstacles by placing nodes closer to clients.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Switch the client to 2.4 GHz only.
Why it's wrong here
This works but is a workaround, not a solution for utilizing 5 GHz speeds throughout the house.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a higher-gain antenna or a simple repeater can solve signal penetration issues through dense materials, when in fact these solutions fail to address the fundamental physics of 5 GHz attenuation and require a distributed architecture like mesh to maintain performance.
Detailed technical explanation
How to think about this question
5 GHz Wi-Fi operates at higher frequencies (5.15–5.85 GHz) which have shorter wavelengths and are more susceptible to attenuation from dense materials like concrete, whereas 2.4 GHz (2.4–2.4835 GHz) penetrates walls better due to longer wavelengths. Mesh systems use multiple nodes with dedicated backhaul radios (often on a separate 5 GHz or 6 GHz band) to create a robust wireless distribution system (WDS) that can route around obstacles, ensuring consistent coverage without the single-hop limitations of repeaters. In real-world deployments, mesh networks are preferred for multi-room environments with concrete or brick walls because they dynamically adjust paths to maintain signal integrity.
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.
TExam Day Tips
- 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.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this 220-1201 question test?
Wireless Networking Technologies — This question tests Wireless Networking Technologies — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Deploy a mesh Wi-Fi system with nodes in each room. — A mesh Wi-Fi system (Option C) is the best solution because it uses multiple nodes that communicate wirelessly to create a unified network, overcoming signal attenuation caused by thick concrete walls. Unlike a single access point or repeater, mesh nodes are placed in each room to ensure strong 5 GHz coverage by relaying traffic through dedicated backhaul channels, mitigating the high-frequency signal loss that occurs through dense materials.
What should I do if I get this 220-1201 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
2 more ways this is tested on 220-1201
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 user complains that their laptop frequently disconnects from the Wi-Fi when they move to the conference room, which is 50 feet from the access point through two walls. The network uses 5 GHz. What is the MOST likely cause of the disconnects?
medium- A.The access point is overloaded with too many clients.
- B.The laptop's power management settings are turning off the Wi-Fi adapter.
- ✓ C.5 GHz signals have poor penetration through walls.
- D.The conference room has a metal door that blocks the signal.
Why C: The 5 GHz band offers higher data rates and less interference than 2.4 GHz, but it has significantly poorer wall penetration due to its shorter wavelength. At 50 feet through two walls, the signal attenuation is severe enough to cause frequent disconnects, especially if the walls contain dense materials like concrete or metal studs.
Variation 2. A customer reports that their laptop frequently disconnects from the Wi-Fi in their home office, but works fine in other rooms. The office is located in a detached garage, and the wireless router is in the main house. Which wireless networking technology would best solve this issue without running cables?
medium- A.5 GHz frequency band
- ✓ B.Wireless mesh network
- C.Powerline networking adapters
- D.802.11ac standard
Why B: A wireless mesh network is the best solution because it extends Wi-Fi coverage to the detached garage without running cables. Mesh nodes communicate wirelessly with each other, creating a seamless network that overcomes the range and obstruction issues caused by the distance and building materials between the main house and garage.
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Last reviewed: Jul 4, 2026
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