You are implementing a VHT-capable AP. Which one of the following channels is available in the 802.11-2016 standard that was not available before the ratification of 802.11 ac?
You are implementing a VHT-capable AP. Which one of the following channels is available in the 802.11-2016 standard that was not available before the ratification of 802.11 ac?
Channel 144 was introduced in the 802.11ac standard and was not available before its ratification. This makes it the correct choice for the VHT-capable AP in the 802.11-2016 standard.
https://support.metageek.com/hc/en-us/articles/203532644-802-11ac-Channels shows the answer is 144
'Most newer laptops will support all 5 GHz channels, with the exception of 802.11n-based laptops, which will not support channel 144 that was introduced in 802.11ac. ' - Official Book CH6
D. 144 CHAPTER 6 - PAGE 265 (Official Study Guide) "Most newer laptops will support all 5 GHz channels, with the exception of 802.11n-based laptops, which will not support channel 144 that was introduced in 802.11ac."