A company is deploying 802.11ac APs with 4x4 MIMO. They have a mix of client devices: some support 2 spatial streams, others support 3, and a few support 4. The network is designed for high-density areas. What is the primary benefit of using 4x4 MIMO APs in this environment?

It allows each client to use all 4 spatial streams simultaneously, increasing individual throughput

It increases the number of clients that can be served simultaneously through multi-user MIMO

It reduces interference by using more antennas for diversity

It doubles the range of the AP compared to 2x2 MIMO

A university is upgrading its legacy 802.11g network in a large lecture hall. The new APs will support 802.11ax, but the existing client devices are a mix of 802.11a/b/g/n. The IT team wants to maximize performance for the new 802.11ax clients while maintaining compatibility with the older devices. Which PHY configuration should they prioritize?

Disable 802.11b and 802.11g data rates on both bands to force all clients to use 802.11n or newer

Configure the AP to use 802.11ax only on the 6 GHz band and rely on band steering to move 802.11ax clients there

Enable 802.11ax on the 5 GHz band and keep 2.4 GHz for legacy 802.11b/g clients

Set the AP to operate in mixed mode with 802.11ax on both 2.4 GHz and 5 GHz, and enable protection mechanisms for legacy clients

Juniper NetworksCertified Specialist, Mist AI Wireless (JNCIS-MistAI)

Domain 1Objective 1

802.11 PHY Protocols JN0-452 Practice Questions (Page 3)

Part of the Wi-Fi Fundamentals domain, which makes up ~20% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–12 in this domain), expect 1–2 from this objective — we provide 16 practice questions to prepare you well beyond it. (estimate)

16questions here

4free pages

6concepts

Questions 11–15

11application · medium
A company is deploying 802.11ac APs with 4x4 MIMO. They have a mix of client devices: some support 2 spatial streams, others support 3, and a few support 4. The network is designed for high-density areas. What is the primary benefit of using 4x4 MIMO APs in this environment?
Select an answer first
12foundation · easy
Which 802.11 PHY protocol introduced OFDMA and is designed to operate in the 2.4 GHz, 5 GHz, and 6 GHz bands?
Select an answer first
13foundation · easy
Which technology in 802.11ax improves reliability in environments with high interference by allowing multiple antennas to focus the signal?
Select an answer first
14foundation · easy
Which modulation technique is used by 802.11ax to allow multiple users to transmit simultaneously on different subcarriers?
Select an answer first
15application · medium
A university is upgrading its legacy 802.11g network in a large lecture hall. The new APs will support 802.11ax, but the existing client devices are a mix of 802.11a/b/g/n. The IT team wants to maximize performance for the new 802.11ax clients while maintaining compatibility with the older devices. Which PHY configuration should they prioritize?
Select an answer first

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802.11 PHY Protocols JN0-452 Practice Questions (Page 3)

Questions 11–15

A company is deploying 802.11ac APs with 4x4 MIMO. They have a mix of client devices: some support 2 spatial streams, others support 3, and a few support 4. The network is designed for high-density areas. What is the primary benefit of using 4x4 MIMO APs in this environment?

Which 802.11 PHY protocol introduced OFDMA and is designed to operate in the 2.4 GHz, 5 GHz, and 6 GHz bands?

Which technology in 802.11ax improves reliability in environments with high interference by allowing multiple antennas to focus the signal?

Which modulation technique is used by 802.11ax to allow multiple users to transmit simultaneously on different subcarriers?

Keep studying — Wi-Fi Fundamentals