The Chromebook 11 has an 802.11n WiFi standard which is better than most Chromebooks that are a similar age to it. Most Chromebooks that have been on the market for around the same time as it have an 802.11g WiFi standard. This portable PC also have 802.11a and 802.11ac and 802.11b WiFi standards.
This portable PC's Wi-Fi standard (802.11n) is in fact the best Wi-Fi standard amongst all laptops of a similar spec and age to the Chromebook 11.
The worst Wi-Fi standard amongst similar types of portable PC is 802.11a.