The show interfaces g0/1 trunk command provides three lists of VLAN IDs. Which items would limit the VLANs that appear in the first of the three lists of VLANs?
- A shutdown vlan 30 global command
- A switchport trunk allowed vlan interface subcommand
- An STP choice to block on G0/1
- A no vlan 30 global command
Explanation: The first list of VLAN IDs includes all VLANs (1–4094) except those overtly removed per the details in any switchport trunk allowed vlan interface subcommands on the trunk interface. If no such commands are configured, the first list in the output will include 1–4094. The two incorrect answers that mention VLAN 30 both list conditions that change the second of two lists of VLANs in the command output, while STP’s choice to block an interface would impact the third list.
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