Analyzing the routing table and ARP table in the provided image:
* Routing Table Analysis:
* The route 0.0.0.0 with a gateway of 198.51.100.1 on the eth0 interface suggests this is the default route for outbound traffic, indicating that the Firebox's public interface (eth0) is configured to route traffic through this gateway.
* This confirms that the Firebox is publicly reachable at the IP address 198.51.100.1.
* ARP Table Analysis:
* The ARP entry for the gateway IP 198.51.100.1 is not directly shown in the image but could typically be resolved to verify connectivity.
* Other options provided, such as MAC address validation, do not correspond with the current ARP entries shown in the image.
This setup indicates that the Firebox is accessible publicly on the eth0 interface using the IP 198.51.100.1, makingOption Athe correct answer.