What type of authentication method can be implemented in Cisco ISE for network devices?

The choice of MAC Authentication Bypass (MAB) as the correct answer highlights its specific suitability for network devices in Cisco Identity Services Engine (ISE). MAB is particularly useful for non-802.1X capable devices, such as printers, IP phones, or legacy devices that do not support standard methods of port-based network access control. By using MAB, Cisco ISE can authenticate these devices based on their MAC addresses when they attempt to connect to the network.

In a typical deployment, when a device connects to the network, its MAC address is sent to the Cisco ISE for authentication. If the MAC address is recognized and authorized by ISE, the device is permitted access according to the defined policies. This method allows for seamless integration of non-compliant devices without sacrificing security.

The other options, while they serve important roles in network access and identity management, are not primarily designed for authenticating traditional network devices. Device fingerprinting is more about identifying the operating system or device type for policy application rather than authenticating access. WebAuth is used for guest access scenarios where users authenticate through a web page, and email verification is not a method typically relevant in the context of network device authentication through ISE. Therefore, MAB stands out as