Select the appropriate process to configure Anonymous user output cache profile for internet usage

A.
Go to Site Actions and click on Site Settings. Under Administration click Site Enable output cache.
Under Anonymous Cache Profile select Public Internet. Under Authenticated Cache Profile Select the
site type you want to use

B.
Use PowerShell Cmdlet Install – SPUser – Identity Site Settings – Add AnonymousCacheProfile

C.
From Central Administration click Site input cache and select Anonymous check box.

D.
From Central Administration, create a new site collection, and then add an alternate access
mapping using Anonymous Cache Profile

Explanation:
Configure page output cache settings at the site level
1. On the Site Actions menu , click Site Settings.
2. Under Site Administration, click Site output cache.
3. Under Anonymous Cache Profile, do one of the following:

-To inherit the site-wide anonymous profile that you configured on the Site Collection Output Cache
Settings page, select Inherit the profile <profile name>.
-To select a different anonymous cache profile for a page, click Select a page output cache profile.
4. Under Authenticated Cache Profile, do one of the following:
-To inherit the site-wide authenticated profile that was configured on the Site Collection Output
Cache Settings page, select Inherit the profile <profile name>. -To select a different authenticated
cache profile for a page, select a page output cache profile.
5.To apply the settings to subsites in the site collection, select the Apply these settings to all subsites check box.
6. Click OK.
References: http://office.microsoft.com/en-us/sharepoint-server-help/improve-page-rendering-byconfiguringoutput-caching-HA101785628.aspx