問題文
A logistics company must add inspection to a link between a core switch and a router during a two-hour maintenance window. No addressing may change and the surrounding devices must not be reconfigured. Which interface type fits?
選択肢
- Layer 3, because giving the firewall an address on each side lets it route between the switch and the router while the existing devices continue to use the addresses they already have configured on their own interfaces.
- Tap, because it requires no changes at all.
- Virtual wire, because the two bound interfaces need no address and the neighbors keep their existing configuration.
- Layer 2 with a VLAN object, since switching preserves the addressing and the neighboring devices are left exactly as they are today.