You have a server named Server1 that runs Windows Server 2012 R2.
You try to install the Microsoft .NET Framework 3.5 Features feature on Server1, but the
installation fails repeatedly.
You need to ensure that the feature can be installed on Server1.
What should you do?

A.
Run the Add-AppxProvisionedPackagecmdlet.

B.
Remove the .NET Framework 4.5 Features feature.

C.
Connect Server1 to the Internet.

D.
Install the Web Server (IIS) server role.

Explanation:

The files needed are no longer available on the local Hard drive. We need to connect the
server to the Internet.
Important to note that when starting with Windows Server 2012 R2 and Windows 8, the
feature files for .NET Framework 3.5 (which includes .NET Framework 2.0 and .NET
Framework 3.0) are not available on the local computer by default. The files have been
removed. Files for features that have been removed in a Features on Demand configuration,
along with feature files for .NET Framework 3.5, are available through Windows Update. By
default, if feature files are not available on the destination server that is running Windows
Server 2012 R2 R2 Preview or Windows Server 2012 R2, the installation process searches
for the missing files by connecting to Windows Update. You can override the default
behavior by configuring a Group Policy setting or specifying an alternate source path during
installation, whether you are installing by using the Add Roles and Features Wizard GUI or a
command line.
Reference:
Exam Ref 70-410: Installing and Configuring Windows Server 2012 R2, Chapter 2:
Configure server roles and Features, p. 117
Training Guide: Installing and Configuring Windows Server 2012 R2, Chapter 2: Deploying
servers, p. 80