You configure a SharePoint Server 2013 Service Pack1 (SP1) server farm. You have a site
collection named http://www.contoso.com based on the Team Site template that has
anonymous access enabled.
You need to ensure that anonymous users cannot viewapplication-level pages.
What should you do?

A.
From the SharePoint 2013 Management Shell, run the following cmdlet:
Disable-SPFeatureDocumentSet -Url “http://www.contoso.com”

B.
Add User1 to the Site Owners group.

C.
From the SharePoint 2013 Management Shell, run the following cmdlet:
Disable-SPFeatureViewFormPagesLockdown -Url “http://www.contoso.com”

D.
From the SharePoint 2013 Management Shell, run the following cmdlet:
Enable-SPFeatureViewFormPagesLockdown -Url http://www.contoso.com

E.
From the SharePoint 2013 Management Shell, run the following script:
$spWeb = Get-SPWeb “http://www.contoso.com/sales” $spWeb.BreakRoleInheritance($false) $spWeb.
Dispose( )

F.
From the SharePoint 2013 Management Shell, run the following script:
$spWeb = Get-SPWeb “http://www.contoso.com/sales” $spWeb.BreakRoleInheritance($true) $spWeb.
Dispose( )

G.
Add User1 as a site collection administrator.

H.
GrantDesign permissions to the Sales SharePoint user group.

Explanation:
If you’re developing an anonymously accessible SharePoint website, especially an internet-facing one, you may
have noticed that you’re SharePoint Forms pages arealso accessible to anonymous users. For example http://
SERVER/_layouts/viewlsts.aspx, _vti_bin web services etc. Typically we don’t want this, so how do you prevent
anonymous users from accessing these pages? The following steps will help you to do it. This feature is known
as lock down feature which is by default enabled for publishing sites.
To enable this feature
First remove all anonymous access from the site.
Then open command prompt and go to the folder C:\Program Files\Common Files\Microsoft Shared\Web
Server Extensions\14\BIN
First check whether the feature is activated or not; you can use the command below to check it
get-spfeature -site http://url
If ViewFormPagesLockDown is listed, it’s enabled.
If not listed you have to enable it with the command below
To activate the Activate Feature:
stsadm -o activatefeature -url -filename ViewFormPagesLockDown\feature.xml
http://mackenzie-sharepoint.blogspot.co.uk/2011/12/sharepoint-2013-viewformpageslockdown.html
http://sharepointlink.blogspot.co.uk/2013/05/anonymous-web-service-to-sharepoint.html