展示を参照してください。特定の環境でデフォルト VLAN に関連付けられている VLAN ID はどれですか?
正解:A
Cisco switches always have VLAN 1 as the default VLAN, which is needed for many protocol communication between switches like spanning-tree protocol for instance. You can't change or even delete the default VLAN, it is mandatory. The native VLAN is the only VLAN which is not tagged in a trunk, in other words, native VLAN frames are transmitted unchanged.