In the following description of roaming, which of the following statements is correct? (Multiple choice)

Question

Options

• AAPs that implement wireless roaming must have signal coverage overlapping areas
• BAPs that implement wireless roaming must be in the same basic service set (BSS)
• CAPs that implement wireless roaming do not need to have signal coverage in overlapping areas.
• DAPs that implement wireless roaming must be in the same extended service set (ESS)

• A
  78% (40)
• B
  14% (7)
• C
  8% (4)

Explanation

Wireless roaming requires overlapping signal coverage (A) so a client device can detect and connect to the new AP before losing the signal from the old one - without overlap, there's a coverage gap that breaks the connection. Roaming also requires APs to belong to the same Extended Service Set (D), meaning they share the same SSID and are linked through a common distribution system (e.g., wired backbone), making the multi-AP network appear as a single logical network to the client.

Why B is wrong: A Basic Service Set (BSS) is a single AP and its clients - roaming by definition means moving between multiple APs, each forming its own BSS. Requiring the same BSS would mean having only one AP, which contradicts roaming entirely.

Why C is wrong: It directly contradicts A. Non-overlapping coverage creates dead zones where a client drops its current connection before the new AP is reachable, causing service interruption rather than seamless roaming.

Memory tip: Think of the letters - ESS = Extended for Everywhere roaming, and coverage must Overlap so you're never Out of signal. "Roam with an ESS and overlapping zones, or your connection's gone."

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