A router is connected to the switch via a Fast Ethernet interface. Intermittently you experience an outage. What should be done first to remedy the problem? Refer to the following figure.

It is recommended to set all servers and networking hardware statically for speed and duplex. If a network interface flaps (transitions between up and down), auto-negotiation of speed and duplex will be performed again, which could create a service outage. Changing the VLAN to another VLAN will not have any effect on interface resets and disconnects. Changing the switchport mode to a trunk is only applicable if the other side of the link is another switch that is configured as a trunk. Setting the switchport to auto-negotiate will turn on the Dynamic Trunking Protocol (DTP) and allow the switchport to become a trunk if plugged into another switch with DTP.