Which command globally enables AAA on a device?Select an option Clear Responseaaa new-modelaaa authenticationaaa authorizationaaa accounting

To globally enable AAA (Authentication, Authorization, and Accounting) on a device, the command you would use is:

aaa new-model

This command is utilized in Cisco network devices to enable the AAA framework, allowing for centralized management of authentication, authorization, and accounting processes. When the aaa new-model command is executed, it activates the AAA features and allows the device to manage its user access and track user activity effectively.

The other options do not serve the purpose of global enabling of AAA:

• aaa authentication is used to configure authentication methods.
• aaa authorization is for specifying authorization methods for user access.
• aaa accounting is employed for tracking user activities and resource usage.

Overall, only the aaa new-model command is necessary to turn on the AAA framework on networking devices effectively.