Explanation:

Managed domain is the normal domain in Azure AD and can be deployed either through "Password Hash Sync" or "Pass Through Authentication" with Single Sign On.

Federated domain is used for Active Directory Federation Services (ADFS). The federation trust will make sure that the accounts in the on-premises Active Directory are trusted for use with the accounts in Azure AD with Single Sign On.

Deployed through WS-Fed and WS-Trust:
WS-Fed: This protocol is required to join a device to Azure AD.
WS-Trust: This protocol is required to sign in to an Azure AD joined device.

Explanation:

To uninstall docker

sudo apt-get purge docker-ce
sudo rm -rf /var/lib/docker
Note: The output of the below command will provide you with information the installed package software, version, architecture and short description about the package. grep command is used to find the docker package
sudo dpkg --get-selections | grep docker | cut -f 1
sudo apt-get remove --purge <package name from the previous command output>
sudo whereis docker
sudo rm -rf <directory/file path from the previous command output>

Explanation:

 * Containers and virtual machines both have similar resource allocation and allocation benefits.
 * Containers and VMs are functionally different because containers virtualise the Operating System and VMs are virtualise the hardware.
 * Containers are just processes

Explanation:

ubuntu@ip-172-31-59-138:/opt/HelloWorld$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
xdk_helloworld latest a801afaa1782 20 seconds ago 473MB
tomcat jre8 3639174793ba 3 months ago 463MB

Command to run the xdk_helloworld docker image, to listen to the port 80 and route to 8080 in the container which is the tomcat's default port 8080 at runtime.

ubuntu@ip-172-31-59-138:/opt/HelloWorld$ docker run -p 80:8080 xdk_helloworld

Open http://34.204.171.134/HelloWorld/ in a browser to see the HelloWorld web is application running.

Explanation:

1. How to install Docker on Ubuntu 18.04?
2. Docker Command
3. Working with Docker Images
4. What is a dockerfile?
5. How to build a custom docker image?
6. How to run a container?
7. How to SSH into a running container?
8. How to push an image to Docker Hub?
9. How to pull an image from Docker Hub?