Devaki is a network engineer. She is diagnosing an issue with a small business customer's wireless local area network $($WLAN$).$ She knows the Institute of Electrical and Electronics Engineers $($IEEE$)$ has created the standards involved in various network technologies. While WLAN standards cover a wide array of subsets, which general standard does she need to consult that addresses all WLANs?

$802\mathrm{.}3$

$802\mathrm{.}11$

$802\mathrm{.}16$

$802\mathrm{.}18$