The following description of the BYOD networking of large enterprises is wrong?

The network is divided into access layer, distribution layer and core layer.
AP is connected to the access layer switch. It is recommended to use a PoE switch.
AC can be implemented using the built-in AC card of the core switch.
At the access layer, you can use the side-mounted CA to implement wireless centralized control.

Answer(s): D

If the fields To DS and From DS in the frame are both 0, which of the following is the data frame?

Answer(s): A

Regarding the functions of the Huawei WLAN Survey PAD survey tool, is the following statement correct?

Pad survey tool can generate network gauge report, AP list, bill of materials
Pad survey tool export project is to re-import the post-construction project into the planning tool for further planning, and then import it into the WLAN.
Tester 2.0 tool compared to actual collected data
Wi-Fi interference source location and power test functions are available for both the WLAN Planner tool and the Pad tool.
For a building, using the Pad survey tool for the obstacle attenuation test, the surveyor is required to test each obstacle.

Answer(s): A,B

When using omnidirectional antenna coverage outside the WLAN, it is recommended to hang the antenna higher than 12m to avoid tree blockage.

Answer(s): B

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