Question

which of the following is not one of the specifications of wi-fi technology?
a 802.11z
b 802.11g
c 802.11ac
d 802.11n

Explanation:

Wi-Fi standards include 802.11g (released 2003, 54Mbps), 802.11n (2009, up to 600Mbps), 802.11ac (2013, multi - user MIMO). There is no widely - adopted 802.11z standard in common Wi - Fi technology specifications.

Answer:

A. 802.11z