Which of the following options are issues that should be paid attention to in WLAN roaming planning? (Multiple choice)

Question

Options

• AMobile terminals can confirm roaming
• BEnsure that the signal coverage overlap is greater than 50% on the terminal roaming path
• CEnsure that the authentication method is consistent along the roaming path of the terminal
• DTypes of roaming terminals

• A
  80% (36)
• B
  7% (3)
• D
  13% (6)

Explanation

A and C are correct because successful WLAN roaming depends on two fundamental requirements: the terminal must be capable of detecting and executing a roam (A), since some clients stubbornly cling to a weak AP signal ("sticky clients") and never trigger a handoff; and all APs along the roaming path must use the same authentication method (C), because a mismatch between, say, WPA2-PSK on one AP and 802.1X on another will break the session when the terminal tries to re-associate.

B is wrong because the recommended coverage overlap for roaming is typically around 10–20%, not greater than 50%. Excessive overlap causes co-channel interference and contention, degrading overall network performance.

D is wrong because "types of roaming terminals" is too vague to be a specific actionable planning issue - the planning process focuses on network behavior and configuration consistency, not simply categorizing device types.

Memory tip: Think of roaming as a handshake deal - the terminal must be willing (A, it can confirm the roam) and both parties must speak the same language (C, consistent authentication). If either side fails, the roam breaks down.

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