Which of the following description of the management VLAN is correct?

Question

Options

• AMainly responsible for transmitting data of WLAN users when surfing the Internet
• BPVID VLAN under the WLAN ESS interface
• CService VLAN under the service set template
• DResponsible for the establishment of CAPWAP tunnel between AC and AP

• A
  10% (4)
• B
  7% (3)
• C
  2% (1)
• D
  80% (33)

Explanation

Option D is correct because the management VLAN carries the control and management traffic between the AC (Access Controller) and AP (Access Point), specifically the CAPWAP (Control And Provisioning of Wireless Access Points) tunnel used for AP discovery, registration, and ongoing configuration.

Option A describes the service VLAN, which carries actual user data traffic when wireless clients browse the internet -- this is a distinct role from management. Option B, a PVID VLAN under the WLAN ESS interface, relates to how user traffic is tagged at the service level, not how the AC-AP control plane operates. Option C also describes the service VLAN, which is configured under the service set template to forward user data, not control signaling.

Memory tip: Pair the word "management" with "managing the APs" -- the AC must manage each AP it controls, and it does so through the CAPWAP tunnel riding on the management VLAN. If you remember that management means AC-to-AP control, you can eliminate all options about user data (A, C) and interface tagging (B) immediately.

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