Refer to the exhibit. A customer is reporting that connectivity is failing for some wireless client devices. What is your conclusion based on the capture?

Question

Exhibits

Options

• AThe client does not have an ARP entry for the default gateway
• BThe SSID is using WPA3-Enterprise key management
• CThe client has not obtained an IP address on this network previously
• DThe AP is using 20MHz wide 5GHz channels

• A
  55% (18)
• B
  12% (4)
• C
  27% (9)
• D
  6% (2)

Explanation

Option A is correct because the packet capture likely shows the client successfully associating and obtaining an IP address via DHCP, but then sending ARP broadcasts for the default gateway's MAC address with no resolution - without that ARP entry, the client cannot forward traffic off the local subnet, causing connectivity to fail for external destinations.

Option B is wrong because WPA3-Enterprise key management would appear in 802.11 management frame fields (RSN Information Elements) and is not something you conclude from ARP behavior in a capture. Option C is wrong because if the client lacked an IP address entirely, you'd see failed or absent DHCP exchanges - but the capture implies the client has an IP yet still can't communicate, pointing to a Layer 3 forwarding problem, not address acquisition. Option D is wrong because channel width is a physical/radio layer property not directly readable from a Layer 2/3 packet capture, and 20MHz 5GHz channels are valid and wouldn't produce an ARP-specific failure pattern.

Memory tip: When a capture shows a client is connected but traffic dies at the subnet boundary, think "ARP gap" - No ARP reply for the gateway = no MAC = no forwarding. Trace the ARP exchange first before jumping to authentication or radio layer conclusions.

No community discussion yet for this question.