Docker Image and Container Lifecycle

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What is the purpose of Docker images?

To provide a fixed starting point for containers (correct)

To store and organize running containers

To automatically remove stopped containers

To create isolated private networks

What happens to a container when its running process exits?

The container is given a new random name

The container is automatically removed

The container goes into the stopped state (correct)

The container becomes invisible to the system

What is the default behavior for containers created with 'docker run' command?

They are given a random name (correct)

They are automatically assigned a fixed name

They inherit the name of the image used to create them

They are placed in a private network by default

What is the purpose of 'docker prune' command?

To remove all unused Docker objects Signup and view all the answers

How does Docker provide isolation from the Internet for programs in containers?

By default, programs in containers are isolated from the Internet Signup and view all the answers

What does 'exposing ports' in Docker allow you to do?

Specify the port inside the container and outside of the container Signup and view all the answers

When is the 'host networking driver' in Docker used?

When dealing with legacy applications that expect direct connection to the physical network Signup and view all the answers

What is the primary purpose of 'overlay networks' in Docker?

To facilitate communication between a swarm service and a standalone container Signup and view all the answers

When is the 'macvlan driver' considered the best choice in Docker?

When you need your containers to look like physical hosts on your network Signup and view all the answers

What is one of the core features of 'Docker Swarm'?

High availability Signup and view all the answers

What is the result of killing a running container in Docker?

The container goes into the stopped state Signup and view all the answers

What is the default behavior for the names of containers created with 'docker run' command?

They are given random names Signup and view all the answers

What happens to stopped containers if they are not explicitly removed?

They remain in the system Signup and view all the answers

What does 'docker prune' command do in Docker?

It removes all unused objects Signup and view all the answers

What is the primary purpose of Docker images?

To provide a fixed starting point for containers Signup and view all the answers

Which networking driver in Docker is best when you need to migrate from a VM setup or make your containers look like physical hosts on the network with unique MAC addresses?

Macvlan networks Signup and view all the answers

What does the 'host networking driver' in Docker allow you to do?

Directly connect containers to the physical network Signup and view all the answers

When are user-defined bridge networks considered the best choice in Docker?

When you need containers to communicate on the same Docker host Signup and view all the answers

What is the primary purpose of overlay networks in Docker?

Enabling containers running on different hosts to communicate Signup and view all the answers

What is the purpose of third-party network plugins in Docker?

Allowing you to integrate Docker with specialized network stacks Signup and view all the answers