This N10-009 practice question tests your understanding of network implementation. 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.
An organization wants to deploy Wi-Fi in a large, open office space. They need high throughput and the ability to support many simultaneous clients, but they are budget-constrained. Which IEEE wireless standard should they choose?
Why wrong: 802.11ac offers high throughput, but it is less efficient than 802.11ax in high-density environments due to less advanced multi-user support.
B
802.11ax (Wi-Fi 6)
Correct. 802.11ax is optimized for dense client environments with improved capacity and throughput, making it the best choice despite budget constraints.
C
802.11n (Wi-Fi 4)
Why wrong: 802.11n is older and provides lower maximum throughput and less efficient handling of many clients compared to newer standards.
D
802.11b (Wi-Fi 1)
Why wrong: 802.11b is outdated with a maximum data rate of 11 Mbps and very poor client handling; it is not suitable for modern high-throughput requirements.
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 correct choice because it introduces Orthogonal Frequency Division Multiple Access (OFDMA) and MU-MIMO (both uplink and downlink), which significantly improve throughput and capacity in dense environments. It also operates in both 2.4 GHz and 5 GHz bands, providing backward compatibility and better spectrum utilization, all while maintaining cost-effectiveness for large-scale deployments.
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.
✗
802.11ac (Wi-Fi 5)
Why it's wrong here
802.11ac offers high throughput, but it is less efficient than 802.11ax in high-density environments due to less advanced multi-user support.
✓
802.11ax (Wi-Fi 6)
Why this is correct
Correct. 802.11ax is optimized for dense client environments with improved capacity and throughput, making it the best choice despite budget constraints.
Related concept
Read the scenario before looking for a memorised answer.
✗
802.11n (Wi-Fi 4)
Why it's wrong here
802.11n is older and provides lower maximum throughput and less efficient handling of many clients compared to newer standards.
✗
802.11b (Wi-Fi 1)
Why it's wrong here
802.11b is outdated with a maximum data rate of 11 Mbps and very poor client handling; it is not suitable for modern high-throughput requirements.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the misconception that 802.11ac is sufficient for high-density environments, but the trap is that 802.11ac lacks OFDMA and uplink MU-MIMO, which are critical for efficiently handling many simultaneous clients in a budget-constrained deployment.
Detailed technical explanation
How to think about this question
802.11ax achieves higher efficiency through OFDMA, which divides a channel into smaller subcarrier groups (resource units) that can be assigned to different clients simultaneously, reducing contention overhead. Additionally, it introduces BSS Coloring to mitigate co-channel interference in dense deployments, allowing multiple access points to reuse the same channel with less collision. In a real-world open office, this means Wi-Fi 6 can deliver up to 4x the capacity per user compared to Wi-Fi 5, even with budget-friendly access points.
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 N10-009 question in full detail.
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 802.11ax (Wi-Fi 6) — 802.11ax (Wi-Fi 6) is the correct choice because it introduces Orthogonal Frequency Division Multiple Access (OFDMA) and MU-MIMO (both uplink and downlink), which significantly improve throughput and capacity in dense environments. It also operates in both 2.4 GHz and 5 GHz bands, providing backward compatibility and better spectrum utilization, all while maintaining cost-effectiveness for large-scale deployments.
What should I do if I get this N10-009 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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