Refer to the exhibit. Users complain that they intermittently lose data and connections toimportant servers. After investigation, you discover that the 802.1Q trunk between DSW111 andASW1 is down. Even though the HSRP group 11 is being serviced by DSW112, you discover thatthe SVI for VLAN 11 is in the up state on DSW111. Which three Cisco Catalyst IOS commands should you use on DSW111 to find the source of this problem? （）(Choose three.)

• A、show vtp status
• B、show interfaces vlan 11
• C、show standby vlan 11 brief
• D、show spanning-tree vlan 11
• E、show interfaces mod/port trunk