H12-311: HCIA-WLAN V3.0

By Huawei · Browse Mode
About the Exam

HCIA-WLAN V3.0 covers basic WLAN knowledge, including IEEE 802.11 fundamentals, WLAN networking, CAPWAP basics, data forwarding, Wi-Fi 6, AP configuration, access authentication, troubleshooting, antenna technology, and project deployment. It is intended for ICT professionals or students interested in WLAN technologies. Passing demonstrates the ability to deploy and maintain Huawei WLAN products at an associate level.

Exam Topics

  • 高级路由交换技术37%
  • 园区网络规划与部署23%
  • 广域互联网络规划与部署8%
  • 广域承载网络规划与部署15%
  • 网络自动化17%

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Last updated June 1, 2026 at 12:24 PM

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QuestionQ1

园区网络规划与部署

Which of the following was the first WLAN standard defined by IEEE?

Explanation

IEEE 802.11 is the original IEEE WLAN standard. IEEE 802.11a, 802.11b, and 802.11g were introduced later as amendments that added or changed physical-layer capabilities.

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QuestionQ2

高级路由交换技术

Which of these 802.11 standards use orthogonal frequency-division multiplexing (OFDM) technology?

Choose four
Explanation

802.11a uses OFDM, and 802.11g incorporates OFDM for higher-rate operation. The later 802.11n and 802.11ac physical layers are also OFDM-based. Original 802.11 and 802.11b use spread-spectrum methods rather than OFDM.

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QuestionQ3

高级路由交换技术

Which of the following are PHY technologies used by 802.11ac?

Choose three
Explanation

802.11ac uses an OFDM physical layer, supports 256-QAM modulation, and introduces downlink multi-user MIMO (MU-MIMO). OFDMA is associated with 802.11ax, while RTS/CTS and A-MPDU are MAC-layer features.

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QuestionQ4

园区网络规划与部署

MIMO beamforming modifies the phase of radio signals at the transmitting end to raise the received signal strength indicator (RSSI).

Explanation

MIMO transmit beamforming uses per-antenna phase weights to direct energy constructively toward a receiver, which increases received signal strength and can raise RSSI.

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QuestionQ5

园区网络规划与部署

A WLAN deploying Wi‑Fi 6 products provides higher speed than one deploying Wi‑Fi 5 products.

Explanation

Wi‑Fi 6 offers higher maximum data rates than Wi‑Fi 5, along with efficiency improvements that can improve performance in supported WLAN deployments.

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Topics covered
高级路由交换技术园区网络规划与部署广域互联网络规划与部署广域承载网络规划与部署网络自动化
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