You are writing a script to pull information from the Cisco DNA Center via the REST-based API. How do you authenticate so you can communicate with the Cisco DNA Center API?

You will authenticate with Cisco DNA Center by sending a POST request to the API for an authentication token. You can then use the authentication token for all subsequent requests to Cisco DNA Center. You will not pass the username and password; the username and password must be encoded in Base64 to obtain the authentication token. The dna/system/api/v1/auth/token API requires a POST request to obtain the authentication token, not a GET request. The Cisco DNA Center does not use public-private key pairs for API authentication.