Docker for the Absolute Beginner - Hands-On - Docker Networking

The video tutorial covers Docker's default networks: bridge, null, and host. It explains how containers are attached to these networks and how to access them externally. The bridge network is the default, providing internal IPs, while the host network removes isolation, and the null network isolates containers. Custom networks can be created using Docker commands. The tutorial also discusses viewing network settings, using container names for communication, and Docker's networking technology, including network namespaces and virtual Ethernet pairs.

Which network is automatically created by Docker and is the default for containers?

• Host network

• Null network

• Bridge network

• Custom network

What is a key characteristic of the host network in Docker?

• It prevents external access to containers.

• It provides a private internal network for containers.

• It allows containers to share the host's network stack.

• It isolates containers from each other.

How can you create a custom network in Docker?

• By using the 'docker network inspect' command.

• By modifying the default bridge network.

• By using the 'docker network create' command.

• By changing the Docker configuration file.

What command can you use to view the network settings of a Docker container?

• docker network ls

• docker network inspect

• docker container ls

• docker container inspect

What is the purpose of Docker's built-in DNS server?

• To assign IP addresses to containers.

• To resolve container names to IP addresses.

• To create custom networks.

• To manage external network access.

What technology does Docker use to isolate container networks?

• Network namespaces

• Physical network interfaces

• Network bridges

• Virtual machines

How do virtual Ethernet pairs function in Docker networking?

• They connect containers to the internet.

• They link containers to each other within the host.

• They provide IP addresses to containers.

• They isolate containers from the host network.