HOTSPOT
Your network contains an Active Directory forest. The forest contains a single domain named
contoso.com.
You have an Exchange Server 2013 organization that contains one Client Access server named CAS1
and one Mailbox server named MBX1.
You plan to enable Outlook Anywhere for remote access from non-domain joined client computers.
You deploy a trusted third-party certificate that has a subject name of mail.contoso.com.
Users report that they fail to access their email by using Microsoft Outlook 2013 when they work
remotely from a non-domain joined client computer. From the internal network, the users can
access their email by using Outlook 2013.
You verify that Autodiscover is configured remotely.
You need to ensure that the remote users can access their email by using Outlook Anywhere.
Which command should you run? (To answer, select the appropriate options in the dialog box in the
answer area.)
Answer: 
Some of the texts that have been filled in in the answers were actually in the drop down menus. So be sure to learn all the Exchange shell codes and not just the answers provided here.
What i mean is that in the answer above, “ExternalHostName” is already filled in but in the exam, don’t be surprised if its left blank and you have to select it from a drop down menu.