Zach, the network administrator, has just finished installing a new 10/100/1000 switch, but receives
reports from the server administrator that servers connected to the new switch seem to be
experiencing slow LAN connections. Zach checks the port connecting the new switch to the core
switch and sees the following information:
#show run interface GigabitEthernet0/10
Switchport trunk encapsulation dot1q
Switchport mode trunk
Switchport trunk native VLAN 10
Which of the following is the MOST likely cause of the slow connections?

A.
The servers have not had VLAN tagging enabled on their NICs.

B.
Speed and duplex have not been set.

C.
VLAN tagging was not set on the trunk.

D.
The servers have been connected with CAT5 cable.