Which command is needed on each switch port for authentication?

An administrator is adding a switch to a network that is running Cisco ISE and is only for IP Phones The phones do not have the ability to authenticate via 802 1X.

Which command is needed on each switch port for authentication?
A . dot1x system-auth-control
B . enable bypass-mac
C . enable network-authentication
D . mab

Answer: D

Explanation:

https://www.cisco.com/en/US/docs/ios-xml/ios/sec_usr_aaa/configuration/15-2mt/sec-config-mab.html