The network administrator is trying to add Switch1 to the network, but the 802.1Q trunk is not coming up. Switch1 was previously tested in the laboratory and its trunk configuration worked fine. What are three possible causes of this problem? ()
- AThe trunking configuration mode on Switch1 is set to Off.
- BThe trunking configuration mode on the other end is set to On.
- CThe trunking configuration mode on the other end is set to Desirable.
- DCisco Discovery Protocol is not running on the other end.
- EThere is a VTP domain name mismatch.
- FSwitch1 does not support 802.1Q.