Final answer:
To configure 802.1x in OS X 10.11, go to System Preferences, select the Ethernet interface, and set up 802.1x under the Advanced settings.
Step-by-step explanation:
To configure 802.1x in OS X 10.11, you need to follow these steps:
- In System Preferences, go to Network.
- Select the Ethernet interface and click on the Advanced button.
- Go to the 802.1x tab and click on the '+' button to add a new profile.
- Enter the necessary authentication information, such as username and password.
- Click OK to save the settings.
With these steps, you can configure 802.1x authentication on OS X 10.11 without the need for third-party software or using the Terminal.