A network technician is designing a wireless network for a large office building. The goal is for employees to walk from one end of the building to the other without losing their Wi-Fi connection. To achieve this seamless roaming, multiple access points will be deployed as part of an Extended Service Set (ESS). How should the access points be configured?
Configure each access point with a unique SSID and a unique channel.
Configure each access point with the same SSID on the same channel.
Configure each access point with the same SSID on different, non-overlapping channels.
Configure each access point with a unique SSID and the same BSSID.
The correct answer is to configure each access point with the same SSID on different, non-overlapping channels. An Extended Service Set (ESS) allows multiple access points to use the same network name (SSID), making them appear as a single, large network. This enables client devices to roam seamlessly from one access point to another. To prevent signal interference and performance degradation between adjacent access points, they must be set to different, non-overlapping channels (e.g., 1, 6, and 11 for 2.4 GHz Wi-Fi). Configuring APs with the same channel would cause co-channel interference. BSSIDs are the unique MAC addresses of the access points and cannot be configured to be the same.
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What is an Extended Service Set (ESS)?
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Why do access points need different, non-overlapping channels?
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What happens if all access points in an ESS use the same channel?