You have a Lync Server 2013 and Skype for Business Server 2015 infrastructure. You migrate all users to the Skype for Business Server 2015 Front End pool.
After the migration, users are unable to access the whiteboards, attachments, poll data, and the Microsoft PowerPoint presentations that were uploaded to meetings before the migration.
You need to ensure that users can access the PowerPoint presentations, whiteboards, attachments, and the poll data.
What should you do?
Answer : C
A customer has a network environment that includes Skype for Business Server 2015. All users are members of an Active Directory Domain Services (AD DS) domain. All users are using the global client policy. AddressBookAvailability is set to WebSearchOnly.
For some domain users, you change the attributes that relate to title and department. You discover that these attributes are not reflected in the users' contact cards in Skype for Business.
You need to update the Skype for Business address book immediately to reflect the changes you made.
What should you do?
Answer : D
References:
https://technet.microsoft.com/en-us/library/gg398194.aspx
You support Skype for Business Server 2015 Enterprise servers in your customer's organization. You configure dial-in conferencing Users are dispersed in several locations. All client computers run Windows 10.
Users report that they cannot use dial-in conferencing for their conferences. You run the Gct-CsDialPlan Skype for Business Management Shell cmdlet and receive the output shown in the following exhibit. Click the Exhibit button.

You need to ensure that users can join conferences by using dial in conferencing.
What should you do?
Answer : D
You administer a Skype for Business Server 2015 environment. You delegate the CsServerAdministratorroleto User!
User l must manage the installation and deployment of device updates. User l fails to import a device update package on the server due to insufficient permissions.
You need to ensure that User l has the minimum permissions required to install and manage updates for devices.
What should you do?
Answer : C
You deploy a Skype for Business Server 2015 Enterprise Pool that is configured with Enterprise Voice and Dial-in Conferencing. All client computers run Windows 10 and Skype for Business.
Users report that they are unable to share Microsoft PowerPoint presentations.
You need to ensure that while they are in conferences, users are able to share PowerPoint presentations. You also need to ensure that users are able to scroll through PowerPoint presentations.
What should you do?
Answer : B
You need to plan for the implementation of the DHCP configurations for the Skype for Business Phone Edition devices.
Which three configurations should be applied to the Skype for Business Phone Edition devices from DHCP? Each correct answer presents part of the solution. Choose three.
Answer : A, C, E
During a maintenance window, a user reports a logon issue. The user sent you the result of the command nslookup lyncdiscoverinternal_alpineskihouse.com ran on the computer during the
issue.

How can you resolve the issue?
Answer : A