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单项选择题 Which statement about the Lightweight Access Point Protocol （LWAPP） is true？ （）

A、 LWAPP encrypts both control traffic and user data.

B、 LWAPP encrypts user traffic with an x.509 certificate using AES-CCMP.

C、 When set to Layer 3， LWAPP uses a proprietary protocol to communicate with the Cisco  Aironet APs.

D、 LWAPP encrypts control traffic between the AP and the controller.

E、 None of the other alternatives apply.

  • D

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