You have a SharePoint Server 2013 server farm. You need to ensure that users can create
a maximum of 300 alerts for a Web application. Whatshould you do?

A.
Specify a Web Application user policy.

B.
Configure Resource Throttling

C.
Configure Send To Connections

D.
Configure the Web Application General Settings.

Explanation:
To configure alert settings for a Web application by using Central Administration
Verify that the user account that is performing this task is a member of the Farm Administrators SharePoint
group.
On the SharePoint Central Administration Web site, click Application Management.
On the Application Management page, click Manage Web Applications.
Click the Web application for which you want to configure alerts. The ribbon becomes active.
On the ribbon, click the General Settings drop-downmenu, and then click General Settings.
On the Web Application General Settings page, in the Alerts section, configure the following settings:
Specify whether alerts are On or Off. By default, alerts are On.
Specify the Maximum number of alerts that a user can create in a SharePoint Web site. This value can be any
integer from 1 through 2,000,000,000, or you can specify that the number of alerts is unlimited. The default
value is 500 alerts.
After you have finished configuring alerts, click OK.
http://technet.microsoft.com/en-us/library/cc262816.aspx