Which of the following statements about Docker networks is true?

Docker networks facilitate communication between containers, which is fundamental to how Docker operates. When containers are launched within the same network, they can discover and interact with each other seamlessly. This is important for applications that rely on multiple containers for different functionalities; for instance, a web application may need to communicate with a database container. Docker provides different network drivers—like bridge, host, and overlay—that allow for various configurations depending on the use case, whether in development or production environments.

The other statements do not accurately represent Docker networking capabilities. For instance, while some might consider Docker networks more crucial in production, they are equally important during development and testing. Additionally, multiple containers can be connected to a single Docker network, enabling flexible communication paths between them. Finally, network isolation is a critical feature of Docker; containers running in isolated networks cannot communicate with containers in different networks unless explicitly allowed, which enhances security and resource management.