JSON data is written as name/value pairs. A name/value pair consists of a field name (in double quotes), followed by a colon, followed by a value: "name":"Mark" JSON can use arrays. Array values must be of type string, number, object, array, boolean or null. For example: { "name":"John", "age":30, "cars":[ "Ford", "BMW", "Fiat" ] } JSON can have empty object like "taskId":{}

Section: Network Access

Explanation
We can see in this picture we have to type 64 hexadecimal characters (256 bit) for the WPA2 passphrase so we can deduce the encryption is AES-256, not AES-128.

https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/67134-wpa2-config.html