You are bringing up a new Ezonexam switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?
A．Switch(config)# switchport trunk encapsulation isl
B．Switch(config)# switchport trunk encapsulation ietf
C．Switch(config-if)# switchport trunk encapsulation isl
D．Switch(config-if)# switchport trunk encapsulation ietf
E．Switch(config-if)# switchport trunk encapsulation dot1q
