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NEW QUESTION 117
You support a customer whose network environment includes Skype for Business Standard deployed with an Edge Server that is connected to the Internet. All users have Skype for Business Mobile installed on their Windows phones. Users report that they receive instant messages only when the Skype for Business Mobile app is active in the foreground. You need to ensure that mobile users are able to receive instant messages at all the times. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Enable Push Notifications and Federation from the Skype for Business Server Management Shell.
B. Set up hosting provider federation between your organization and the Push Notification Service at Skype for Business Online.
C. Upgrade the Lync 2010 Mobile add on the Windows mobile devices.
D. Install the Skype for Business Mobility components on the Edge Server.
E. Open port 5223/TCP outbound on the company firewall.