H12-821_V1.0 Exam Dumps | As shown in the figure, data traffic is forwarded in tunnel mode along the path of STA -> HAP ->

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Question 40/107

As shown in the figure, data traffic is forwarded in tunnel mode along the path of STA -> HAP -> HAC -> upper-layer network before roaming. What is the flow direction of data traffic after Layer 3 roaming?

A. STA -> FAP -> FAC -> HAC -> HAP -> HAC -> Upper-layer network

B. STA -> FAP -> FAC -> HAC -> Upper-layer network

C. STA -> FAP -> FAC -> Upper-layer network

D. STA -> FAP -> FAC -> HAC -> HAP -> Upper-layer network

Correct Answer: B

After Layer 3 roaming, the STA's traffic is forwarded from the Foreign AP (FAP) to the Foreign AC (FAC), and then to the Home AC (HAC) before reaching the upper-layer network. This ensures that the STA remains on the same subnet without breaking existing sessions .

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