Which term describes a network formed by multiple BSSs interconnected to enable seamless roaming?

Which term describes a network formed by multiple BSSs interconnected to enable seamless roaming?

• A. Basic Service Set (BSS)
• B. Service Set Entity (SSE)
• C. Service Set Identifier (SSID)
• D. Extended Service Set (ESS)

Answer: (D)

Extended Service Set is the network formed by multiple BSSs interconnected through a common distribution system to enable seamless roaming. Each BSS is one access point and its connected devices; when several BSSs share the same SSID and are wired together, they create an ESS. This setup lets a client move from one AP to another without dropping the connection because the network identity stays the same and the distribution system handles the handoff, maintaining a continuous session as you roam. The SSID is simply the network name, not the roaming architecture, and a single BSS cannot provide roaming on its own. A Service Set Entity is a broader IEEE 802.11 concept used in design and management, not the specific roaming network formed by multiple APs.

Extended Service Set is the network formed by multiple BSSs interconnected through a common distribution system to enable seamless roaming. Each BSS is one access point and its connected devices; when several BSSs share the same SSID and are wired together, they create an ESS. This setup lets a client move from one AP to another without dropping the connection because the network identity stays the same and the distribution system handles the handoff, maintaining a continuous session as you roam. The SSID is simply the network name, not the roaming architecture, and a single BSS cannot provide roaming on its own. A Service Set Entity is a broader IEEE 802.11 concept used in design and management, not the specific roaming network formed by multiple APs.