Perform a roaming test through the CloudCampus app. After the test is completed, the roaming record is as shown in the figure below. Which options are correct for describing this roaming? (Multiple…

Question

Exhibit

Options

• AThe signal strength of the terminal before roaming is -78 dBm
• BNo packet loss occurred during roaming test
• CThe signal strength of the terminal after roaming access to the AP is -33 dBm
• DThe working channel of the AP accessed by the terminal changes before and after roaming

• A
  81% (13)
• D
  19% (3)

Explanation

Options A, B, and C are confirmed directly by data fields visible in the CloudCampus roaming record: the pre-roaming signal strength reads -78 dBm, the packet loss counter shows 0 (meaning no packets were dropped during the handoff), and the post-roaming signal strength on the new AP reads -33 dBm - a significantly stronger signal, which is the expected trigger and result of a successful roam.

Option D is incorrect because the roaming record shows the same working channel on both the source AP and the target AP; the channel did not change before and after roaming in this test scenario.

Memory tip: In roaming record questions, think in three columns - signal before, loss during, signal after - and treat any claim about channel change as a trap unless the record explicitly shows two different channel numbers. The improvement from -78 dBm to -33 dBm (a 45 dBm gain) is the classic "roam-toward-a-stronger-AP" signature that confirms a valid, packet-loss-free handoff.

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