問題文
Two access points at a small office sit behind one device that translates addresses, so the controller sees both of them arriving from the same public address. Which mechanism lets the controller bind the control channel and the data channel of each unit to the right unit?
選択肢
- The wired address that each unit reports inside its join request because that value is unique per unit.
- An identifier that each unit sends to the controller while its data channel is checked.
- A static address that an administrator gives to each unit so that the controller can tell them apart.
- The port that the translating device gives to each unit because that value stays fixed for the life of the tunnel.