HOTSPOT
You are the administrator for your company’s SharePoint environment.
You are preparing your environment for high availability. You must use SQL Server AlwaysOn.
You need to identify the replication methodology for each SharePoint service database.
In the table below, identify whether SQL Server AlwaysOn is available for each of the service databases.
NOTE: Make only one selection in each column.
Answer: 
Explanation:
The Configuration database is farm specific and does not support Async.
The Central Administration content database is farm specific and does not support Async.
Configuration database and Central Admin content database supports only synchronous commit and not asynchronous. Content databases support both. Service application various. Source: https://technet.microsoft.com/en-us/library/jj841106.aspx