The Chromebook 11 has an 802.11n WiFi standard which is better than most notebook PCs of this type and age. Most notebook PCs that came out around the same time as it have an 802.11b WiFi standard. This portable PC also have 802.11a and 802.11ac and 802.11g WiFi standards.
An 802.11n WiFi standard is actually the best Wi-Fi standard amongst all Chromebooks that have been around for a comparable time to the Chromebook 11.
An 802.11a WiFi standard is the worst Wi-Fi standard across comparable types of laptop.