Which networking mode allows containers to communicate with each other on the same host?

The Bridge networking mode is commonly used in Docker to facilitate communication between containers that are running on the same host. When you create a container, Docker automatically creates a bridge network (named bridge by default) to which all containers are connected unless specified otherwise. This mode allows containers to communicate with each other by referencing container names or IP addresses assigned to them within the network.

Each container on the bridge network receives a unique IP address, and they can send traffic to each other over this network. This setup simplifies the connection process between containers without the need for them to be exposed to external networks unless explicitly configured to do so. It also isolates the container's network environment from the host system and other networks.

In contrast, the Host networking mode allows containers to share the host's network namespace, which can lead to performance benefits but also introduces complexities in IP address management. Overlay networking enables communication between containers across multiple hosts, typically in a swarm setup, and 'None' would mean the container does not have a network interface, limiting its ability to communicate. Therefore, with Bridge mode being specifically designed for container-to-container communication on the same host, it stands out as the correct answer.