You need to configure a new PassGuide switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packet?
A. PassGuideSwitch(config-if)#switchport trunk encapsulation dot1q
B. PassGuideSwitch(config-if)#switchport trunk encapsulation itef
C. PassGuideSwitch(config-if)#switchport trunk encapsulation fddi
D. PassGuideSwitch(config-if)#switchport trunk encapsulation isl
E. None of the other alternatives apply
Answer: D