If a wireless client is connected to two APs with the same SSID, what is used to determine which wireless AP the wireless terminal is connected to?

Question

Options

• ASSID
• BESSID
• CBSSID
• DBSA

• A
  6% (2)
• B
  3% (1)
• C
  76% (25)
• D
  15% (5)

Explanation

BSSID (Basic Service Set Identifier) is the MAC address of a specific access point's radio interface, making it unique to each AP even when multiple APs share the same SSID. When a wireless client associates with an AP, it binds to that AP's BSSID, which is what distinguishes one physical access point from another.

SSID is simply the human-readable network name shared across all APs in the network, so it cannot differentiate between them. ESSID (Extended Service Set Identifier) refers to the same shared network name across a multi-AP deployment and is effectively synonymous with SSID for this purpose - it identifies the logical network, not a specific AP. BSA (Basic Service Area) is the physical radio coverage zone of a single AP, not an identifier transmitted in frames.

Memory tip: Think of BSSID as the "fingerprint" of an individual AP - just as two people can have the same name (SSID) but different fingerprints (BSSID), two APs can share a network name but each has a unique MAC-based BSSID that clients use to track which one they are actually talking to.

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