JN0-451: Mist AI, Specialist (JNCIS-MistAI)

Combining two equal-width channels produces twice the channel bandwidth and therefore twice the theoretical capacity. Because integrated thermal noise is proportional to bandwidth, doubling the channel width doubles noise power, which is a 3 dB increase in the noise floor. Cisco notes that wider channels increase the noise floor and reduce SNR by 3 dB for each doubling of channel width.

AP33 and AP43 have virtual Bluetooth Low Energy (vBLE) antenna arrays that support Mist location services. AP32 provides an omnidirectional BLE antenna for basic asset visibility, while AP12 does not provide vBLE.

In logarithmic power measurements, a 3 dB gain is approximately a factor-of-two increase in power, while a 10 dB loss is a factor-of-ten decrease in power.

An extended service set consists of multiple BSSs. Each BSS has a unique BSSID, while the SSID is shared across the BSSs so they represent one wireless network to clients.

A config template centralizes organization-level WLAN and WxLAN policy configuration so the same policies can be applied consistently across multiple sites. Juniper Mist documentation describes WLAN templates as containing WLAN and WxLAN policies and supporting application to multiple sites or an entire organization.