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Difficulty: EasyWireless Principles and Architecture

An administrator is documenting the 802.11 wireless architecture for a corporate office. Which identifier uniquely distinguishes a specific Basic Service Set (BSS) operating on an access point radio at the Layer 2 data link layer?

  1. The MAC address of the access point's radio interface (BSSID)Answer
  2. B
    The human-readable text string configured for the network (SSID)
  3. C
    The collection of multiple APs sharing a common network name (ESS)
  4. D
    The IP address of the Wireless LAN Controller management interface

Answer

The MAC address of the access point's radio interface (BSSID) uniquely identifies a specific Basic Service Set (BSS).
The correct answer identifies the Basic Service Set Identifier (BSSID), which is the 48-bit MAC address of the access point radio serving a specific wireless cell (BSS). In 802.11 networks, this hardware address uniquely distinguishes frame traffic sent to or from that particular radio.

Step-by-Step Solution

1
Identify the standard 802.11 terminology for wireless service sets and their unique identifiers.
A Basic Service Set (BSS) consists of a single access point radio and its associated clients.
Understanding the fundamental building blocks of Wi-Fi coverage cells is necessary for network identification.
2
Determine which parameter acts as the Layer 2 hardware address for a BSS.
The Basic Service Set Identifier (BSSID) is used at Layer 2 and corresponds directly to the 48-bit MAC address of the AP radio servicing that BSS.
Wireless client frames use the BSSID MAC address in 802.11 frame headers to target a specific AP radio.

Key Concept

Basic Service Set Identifier (BSSID) in 802.11 Wireless Architecture
Estimated Time:45s
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Topics

Wireless Principles and Architecture

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