- A
Uses OFDMA for improved efficiency
OFDMA allows multiple users to share channels efficiently.
- B
Uses only 20 MHz channels
Why wrong: Wi-Fi 6 supports channel widths up to 160 MHz.
- C
Supports WPA3 as the mandatory security standard
Wi-Fi 6 certification requires WPA3 support.
- D
Maximum theoretical speed is lower than Wi-Fi 5
Why wrong: Wi-Fi 6 has higher speeds than Wi-Fi 5.
- E
Operates only on the 5 GHz band
Why wrong: Wi-Fi 6 operates on both 2.4 and 5 GHz.
Question 448 of 1,000
200-901 Network Fundamentals Practice Question
This 200-901 practice question tests your understanding of network fundamentals. 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 network administrator is deploying a wireless network that supports the latest security standards and high throughput. Which TWO of the following are true regarding Wi-Fi 6 (802.11ax) compared to Wi-Fi 5 (802.11ac)?
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
✓
Uses OFDMA for improved efficiency
Option A is correct because Wi-Fi 6 (802.11ax) introduces Orthogonal Frequency Division Multiple Access (OFDMA), which subdivides a channel into smaller resource units (RUs) to serve multiple clients simultaneously, significantly improving efficiency in dense environments compared to Wi-Fi 5's OFDM that allocates the entire channel to a single user per transmission.
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.
- ✓
Uses OFDMA for improved efficiency
Why this is correct
OFDMA allows multiple users to share channels efficiently.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Uses only 20 MHz channels
Why it's wrong here
Wi-Fi 6 supports channel widths up to 160 MHz.
- ✓
Supports WPA3 as the mandatory security standard
Why this is correct
Wi-Fi 6 certification requires WPA3 support.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Maximum theoretical speed is lower than Wi-Fi 5
Why it's wrong here
Wi-Fi 6 has higher speeds than Wi-Fi 5.
- ✗
Operates only on the 5 GHz band
Why it's wrong here
Wi-Fi 6 operates on both 2.4 and 5 GHz.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Wi-Fi 6 only uses 20 MHz channels or only operates on 5 GHz, confusing it with older standards like 802.11b/g or 802.11a, while the key differentiator is OFDMA and mandatory WPA3 support.
Detailed technical explanation
How to think about this question
OFDMA in Wi-Fi 6 divides a channel into subcarriers grouped into Resource Units (RUs) of varying sizes (e.g., 26, 52, 106, 242 subcarriers), allowing the access point to allocate RUs to different clients in the same transmit opportunity (TXOP). This reduces overhead from contention and preamble, especially beneficial in IoT-heavy or high-density scenarios like stadiums or conference halls, where many low-bandwidth devices coexist.
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 200-901 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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this 200-901 question test?
Network Fundamentals — This question tests Network Fundamentals — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Uses OFDMA for improved efficiency — Option A is correct because Wi-Fi 6 (802.11ax) introduces Orthogonal Frequency Division Multiple Access (OFDMA), which subdivides a channel into smaller resource units (RUs) to serve multiple clients simultaneously, significantly improving efficiency in dense environments compared to Wi-Fi 5's OFDM that allocates the entire channel to a single user per transmission.
What should I do if I get this 200-901 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.
About these practice questions
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Last reviewed: Jul 4, 2026
This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.
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