An engineer must ensure that a device that supports a limited number of channels in 5 GHz continues to function in selected areas of a stadium. Which action ensures that a limited number of 5 GHz is e

The 802.11a RSSI-check is configured per AP and, when active, blocks 5 GHz association for clients whose signal does not meet a minimum threshold - which can prevent limited-channel devices from connecting. Disabling it only on the APs in the target stadium areas allows those APs to respond to the device's 5 GHz probes without signal constraints, while all other APs retain their existing settings and remain unaffected.

RF profiles can restrict the active channel set on groups of APs but do not address the RSSI-based association gating that prevents a limited-channel device from successfully associating on 5 GHz.

Enabling 40 MHz channels adjusts channel bandwidth and does not resolve the channel availability or association restrictions faced by a device with limited 5 GHz channel support.

CCK data rates are 802.11b (2.4 GHz) modulation rates and have no effect on 5 GHz radio channel selection or client association behavior.