The answer is lowering AP transmit power to reduce cell size and increase capacity. This is correct because in high-density environments, smaller cells allow for greater frequency reuse, meaning more access points can operate on the same non-overlapping channels without causing co-channel interference, which directly boosts aggregate throughput. On the ENCOR 350-401 exam, this concept tests your understanding of channel reuse planning and the trade-off between coverage and capacity—a common trap is assuming higher power always improves performance, when in fact it creates overlapping cells that degrade user experience. For high-density wireless network planning considerations, remember that the goal is to maximize spatial reuse, not raw signal strength. A useful memory tip: “Smaller cells, bigger capacity—think shrink to scale.”
350-401 Architecture Practice Question
This 350-401 practice question tests your understanding of architecture. 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.
Which THREE of the following are valid considerations when planning a wireless network for high-density environments?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a channel reuse plan that minimizes co-channel interference.
Option A is correct because a channel reuse plan that minimizes co-channel interference is essential in high-density environments to ensure that adjacent access points (APs) do not use the same or overlapping channels, which would degrade throughput. By carefully planning channel assignments (e.g., using non-overlapping channels in the 5 GHz band), you maximize spatial reuse and overall network capacity.
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.
✓
Use a channel reuse plan that minimizes co-channel interference.
Why this is correct
Proper channel planning is essential in high-density environments.
Related concept
Read the scenario before looking for a memorised answer.
✓
Prefer the 5 GHz band over 2.4 GHz for client connectivity.
Why this is correct
5 GHz offers more non-overlapping channels and less interference.
Related concept
Read the scenario before looking for a memorised answer.
✓
Lower AP transmit power to reduce cell size and increase capacity.
Why this is correct
Lower power creates smaller cells, allowing more APs and higher capacity.
Related concept
Read the scenario before looking for a memorised answer.
✗
Increase AP transmit power to maximize coverage.
Why it's wrong here
Higher power increases cell overlap and co-channel interference.
✗
Enable 2.4 GHz band only to maximize range.
Why it's wrong here
2.4 GHz has limited channels and is more prone to interference.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that increasing AP transmit power always improves coverage and performance, when in fact, in high-density environments, lowering power and reducing cell size is the correct strategy to increase capacity and minimize interference.
Detailed technical explanation
How to think about this question
In high-density wireless design, the key is to reduce the cell size (coverage area) of each AP by lowering transmit power, which allows more APs to be deployed in the same physical space without causing excessive co-channel interference. This approach, combined with careful channel reuse (e.g., using a 1-6-11 pattern in 2.4 GHz or a 20 MHz channel plan in 5 GHz), increases the number of available channels and improves aggregate throughput. Real-world deployments in stadiums or conference centers often use directional antennas and cell sizing to manage client density.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 350-401 question in full detail.
Architecture — This question tests Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a channel reuse plan that minimizes co-channel interference. — Option A is correct because a channel reuse plan that minimizes co-channel interference is essential in high-density environments to ensure that adjacent access points (APs) do not use the same or overlapping channels, which would degrade throughput. By carefully planning channel assignments (e.g., using non-overlapping channels in the 5 GHz band), you maximize spatial reuse and overall network capacity.
What should I do if I get this 350-401 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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