HOTSPOT
Your company has an Office 365 subscription and uses Microsoft Skype for Business Online. The environment includes the domains shown in the following image, and is configured as shown in the exhibit. (Click the Exhibit button.)
Skype for Business is not deployed in a hybrid configuration.
An employee requires specific Skype for Business communication settings. The employee’s account is configured as shown in the following image.
For each of the following statements, select Yes if the statement is true. Otherwise, select No. Each correct selection is worth one point.
Hot Area:
https://support.office.com/en-us/article/Users-can-contact-external-Skype-for-Business-users-b414873a-0059-
Answer: 
Explanation:
Internal communication (contoso.com), and external communication with fabrikam.com are both allowed.
References:
4cd5-aea1-e5d0857dbc94
Wrong.
Yes
Yes
Yes
12
3
Wrong, the correct answer is
yes
yes
No
The checkbox of external comunication is enabled, and the external access is configured to only allow comunications with the domains allowed in the list,so fabrikan.com is the only domain in that list.
3
8
Wrong
Yes
Yes
Yes
The drop down list does not influence to the checkbox of external communication. They have absolutely different purposes
6
3