You need to prevent all call center personnel from comm…

You are the Office 365 administrator for your company. The company allows external communications through
Microsoft Lync Online for all domains.
The call center manager reports that call center personnel are spending too much time chatting with friends and
not enough time taking calls. She requests that the call center personnel be blocked from chatting with anyone
external to the company by using Lync Online. They still must be able to communicate with internal users.
You need to prevent all call center personnel from communicating with external contacts by using Lync Online,
while still allowing other employees to communicate with external contacts.
What should you do?

A.
In the Lync admin center, select all users, edit their external communications settings, and clear the Lync
Users check box.

B.
On the External Communications page of the Lync admin center, turn off external access.

C.
In the Lync admin center, remove the Lync Online license from each of the call center personnel.

D.
In the Lync admin center, select all call center personnel, edit their external communications settings, and
clear the People on Public IM Networks check box.

Explanation:
The question states that “You need to prevent all call center personnel from communicating with external
contacts by using Lync Online, while still allowing other employees to communicate with external contacts.”
Therefore, we need to apply the restriction to the call center personnel only.
The question also states that “They still must be able to communicate with internal users.”
You can turn off external messaging for a single user by clearing the People on Public IM Networks check box.
This will override the company setting of allowing external access. The image below shows the People on
Public IM Networks check box.
To ensure that the call center personnel can continue to be able to communicate with internal users, we need to
leave the Lync users checkbox ticked.