Which one of following standard can not work at 2.4GHz?

Posted by: Pdfprep Category: H19-301-ENU Tags: H19-301-ENU exam questions, H19-301-ENU practice exam, HCS-Pre-Sales-IP Network(Datacom) Post Date: November 12, 2020

Which one of following standard can not work at 2.4GHz?
A . 802.11ac
B . 802.11b
C . 802.11g
D . 802.11n

Answer: A