350-401 Question #1089: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. An SSID is configured and both clients can reach their gateways on the Layer 3 switch, but they cannot communicate with each other. Which action resolves this issue?

Options

• ASet the WMM Policy to Allowed
• BSet the P2P Blocking Action to Disabled
• CSet the WMM Policy to Required
• DSet the P2P Blocking Action to Forward-UpStream

Explanation

When wireless clients on the same SSID can reach their gateway but not each other, peer-to-peer (P2P) blocking is likely enabled, and disabling it will allow client communication.

Common mistakes.

• A. Setting the Wi-Fi Multimedia (WMM) Policy to Allowed or Required relates to QoS and traffic prioritization, not client-to-client communication blocking.
• C. Setting the Wi-Fi Multimedia (WMM) Policy to Allowed or Required relates to QoS and traffic prioritization, not client-to-client communication blocking.
• D. Setting P2P Blocking Action to Forward-UpStream means client-to-client traffic is forwarded to the upstream device for processing, which still prevents direct peer-to-peer communication on the local segment.

Concept tested. Wireless client-to-client communication (P2P blocking)

Reference. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/wireless_lan_configuration.html

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