Which three actions should you perform in sequence?

DRAG DROP
An organization plans to install apps in its production SharePoint environment hosted at
sharepoint.contoso.com.
The services necessary to host and enable apps have not been configured.
You need to configure the environment to host SharePoint apps.
Which three actions should you perform in sequence? (To answer, move the appropriate actions
from the list of actions to the answer area and arrange them in the correct order.)

Answer: See the explanation

Explanation:
Box 1:

Box 2:

Box 3:

Note:
*
To create a wildcard Alias (CNAME) record for the new domain name
Verify that the user account that performs this procedure is a local administrator on the domain
controller.
In DNS Manager, under Forward Lookup Zones, right-click the new app domain name, and then click
New Alias (CNAME). (box 1)
In the New Resource Record dialog box, in the Alias name (uses parent domain if left blank) box,
type *.
The Fully qualified domain name (FQDN) box displays *. followed by the domain name that you
created for apps. For example, *.ContosoApps.com or *.Contoso-Apps.com. (box 2)
Next to the Fully qualified domain name (FQDN) for target host box, type the FQDN of the server
that hosts the SharePoint sites. (box 3)
* Overview of how to configure an environment for apps for SharePoint

* SharePoint-hosted apps for SharePoint are installed on a SharePoint 2013 website, called the host
web, and that have their resources hosted on an isolated subsite of a host web, called the app web.
This approach enables you to reuse common SharePoint artifacts, such as lists and Web Parts. When
you take this approach, you can use only JavaScript and you cannot use any server-side code.
Configure an environment for apps for SharePoint (SharePoint 2013)