When configuring a trunk between a router and a switch, which command must be configured on the switch to ensure that the trunk comes up?
A) switchport mode dynamic desirable
B) switchport mode dynamic auto
C) switchport mode access
D) switchport mode trunk

Question

Quizplus · Accepted Answer

D) Routers do not support the Dynamic Trunking Protocol and, because of this, do not support dynamic trunking (dynamic desirable or auto). The only way to bring up a trunk between a router and a switch is by using the switchport mode trunk command.

When Configuring a Trunk Between a Router and a Switch