Which of the following descriptions of WLAN network optimization measures is wrong?

Question

Options

• AIf the threshold value for forcing users to go offline is too high, it will cause users to be easily
• BIt is recommended to separate the AP management VLAN and user service VLAN
• CIf multicast services are not planned in the network, it is recommended to configure multicast
• DAP management VLAN and service VLAN can use VLAN 1

• A
  4% (2)
• B
  16% (8)
• C
  10% (5)
• D
  70% (35)

Explanation

Option D is incorrect because using VLAN 1 for AP management or service VLANs violates network security best practices. VLAN 1 is the default "native" VLAN on most switches, meaning untagged traffic lands there automatically - making it a well-known attack surface and a poor choice for any production traffic.

Why the distractors are accurate (and therefore not the answer):

• A is correct: a high force-offline (kick) threshold means APs disconnect users too aggressively, degrading the roaming experience.
• B is correct: separating AP management and service VLANs is a fundamental best practice that limits the blast radius of misconfigurations and attacks.
• C is correct: when multicast is unused, suppressing or converting it to unicast prevents unnecessary wireless broadcast traffic from consuming airtime.

Memory tip: Think "VLAN 1 = Villain 1" - it's the default, everyone knows it, and putting sensitive management or user traffic there is always wrong. Any exam question suggesting VLAN 1 is acceptable for production use is almost certainly the incorrect option.

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