Refer to the exhibit. Router R-West and switch S-West1 are connected via a single ethernet cable between the router interface fa0/0 andthe switch interface fa0/1. The router and switch have been configured with the commands that are displayed in the exhibit. The networkadministrator enters the show interfaces trunk command and receives the output as shown. What is the cause of the "not-trunking"status for switch port Fa0/1?

Refer to the exhibit. Router R-West and switch S-West1 are connected via a single ethernet cable between the router interface fa0/0 andthe switch interface fa0/1. The router and switch have been configured with the commands that are displayed in the exhibit. The networkadministrator enters the show interfaces trunk command and receives the output as shown. What is the cause of the "not-trunking"status for switch port Fa0/1?

• The trunk is established, but no VLANs have been configured to use it.
• The router is missing the dynamic trunking protocol statements necessary to form a trunk.
• Because the router does not support Dynamic Trunking Protocol, the trunk has not been established.
• The router, the switch, or both must be configured with the dynamic desirable option for Dynamic Trunking Protocol to establish atrunk.

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