CCNA Network Infrastructure and Connectivity Practice Question
Which TWO statements accurately describe wireless LAN fundamentals for CCNA 200-301 v2.0? (Choose two.)
⚠ Common exam trap
Cisco often tests the misconception that 802.11ac operates in both 2.4 GHz and 5 GHz bands, or that MU-MIMO in 802.11ax is exclusive to uplink, when in fact 802.11ax supports MU-MIMO bidirectionally and 802.11ac is strictly 5 GHz.
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
✓
802.11ac operates only in the 5 GHz frequency band.
802.11ac (Wi‑Fi 5) operates exclusively in the 5 GHz band, leveraging wider channels (up to 160 MHz) and reduced interference. Option D is correct: WPA3 introduces Simultaneous Authentication of Equals (SAE) for robust password‑based authentication, replacing the weaker WPA2 four‑way handshake. Option A is wrong: 802.11ax (Wi‑Fi 6) supports MU‑MIMO for both uplink and downlink, not only downlink. Option C is wrong: Overlapping channels in the 2.4 GHz band reduce throughput and are not used to maximize availability; instead, non‑overlapping channels (1, 6, 11) are recommended. Option E is wrong: A WLC is typically managed via a web GUI, SSH, or SNMP, not via its console port for routine operations; console access is used for initial setup or troubleshooting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
802.11ax uses MU‑MIMO only for downlink transmissions.
Why it's wrong here
802.11ax (Wi-Fi 6) supports MU-MIMO in both downlink and uplink directions, a significant upgrade from 802.11ac, which only supported downlink MU-MIMO. The claim that 802.11ax uses MU-MIMO only for downlink is incorrect—it also enables uplink multi-user transmissions. Additionally, 802.11ax relies primarily on OFDMA to efficiently serve multiple users by dividing channel resources, with MU-MIMO as a complementary feature.
- ✓
802.11ac operates only in the 5 GHz frequency band.
Why this is correct
802.11ac (Wi-Fi 5) is strictly a 5 GHz standard; it does not support 2.4 GHz at all. Because of this, dual-band access points must fall back to 802.11n for 2.4 GHz clients. This design allows 802.11ac to use wider channels (80/160 MHz) and dense modulation (256-QAM) without the congestion and interference common in the 2.4 GHz band.
- ✗
Overlapping channels in the 2.4 GHz band are used to maximize non-overlapping channel availability.
Why it's wrong here
Overlapping 2.4 GHz channels, such as 3 or 6, actually reduce non-overlapping channel availability because their frequency spectra collide, causing adjacent-channel interference and degraded throughput. In the 2.4 GHz band, only channels 1, 6, and 11 are separated sufficiently to be non-overlapping. Deploying channels that overlap forces the CSMA/CA mechanism to defer transmission frequently, hurting network performance rather than maximizing availability.
- ✓
WPA3 uses Simultaneous Authentication of Equals (SAE) to provide stronger password-based authentication.
Why this is correct
WPA3's Simultaneous Authentication of Equals (SAE) replaces the Pre-Shared Key (PSK) handshake used in WPA2 with a Dragonfly key exchange, providing mutual authentication and forward secrecy. Unlike WPA2's four-way handshake, SAE is resistant to offline dictionary attacks because each authentication attempt requires an expensive computation. This makes password guessing impractical even if an attacker captures the handshake traffic.
- ✗
A wireless LAN controller (WLC) is typically managed via its console port for day-to-day operations.
Why it's wrong here
A WLC's console port is intended for initial configuration and out-of-band emergency recovery, not routine management. Day-to-day operations are performed over the network using a web-based GUI, SSH, or SNMP, which allow monitoring, configuration, and firmware updates. Relying on the console port for every change would be impractical and lacks scalability for multiple controllers in an enterprise deployment.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓802.11ac operates only in the 5 GHz frequency band.Correct answer▾
Why this is correct
802.11ac (Wi-Fi 5) is strictly a 5 GHz standard; it does not support 2.4 GHz at all. Because of this, dual-band access points must fall back to 802.11n for 2.4 GHz clients. This design allows 802.11ac to use wider channels (80/160 MHz) and dense modulation (256-QAM) without the congestion and interference common in the 2.4 GHz band.
✗802.11ax uses MU‑MIMO only for downlink transmissions.Wrong answer — click to see why▾
Why this is wrong here
MU-MIMO is a feature of 802.11ac and 802.11ax, but 802.11ax primarily relies on OFDMA for multi-user support.
✗Overlapping channels in the 2.4 GHz band are used to maximize non-overlapping channel availability.Wrong answer — click to see why▾
Why this is wrong here
Overlapping channels reduce performance due to co-channel interference, not maximize non-overlapping channels.
✗A wireless LAN controller (WLC) is typically managed via its console port for day-to-day operations.Wrong answer — click to see why▾
Why this is wrong here
Console port is used for initial configuration or troubleshooting, not for routine management.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
TCP Three-Way Handshake
Key term
SNMP
SNMP (Simple Network Management Protocol) is an application-layer protocol used to collect and organize information about managed devices on IP networks and to modify that information to change device behavior.
Key term
LAN
Local Area Network — a network confined to a single physical location such as an office, building, or campus.
About these practice questions
Courseiva writes every 200-301 question from scratch — 1,389 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-301 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 200-301 exam.