You have a SharePoint Server 2013 Service Pack 1 (SP1) server farm. You have a Web
application that is accessed by using the URL https://portal.contoso.com. You need to add
a new site collection to the Web application. Usersmust be able to access the site
collection by using the URL https://hrweb.contoso.com. What should you do?

A.
From Central Administration, extend the Web application.

B.
From the SharePoint 2013 Management Shell, run the new-spsite cmdlet.

C.
From Internet Information Services (IIS) Manager,create a new virtual directory, and then modify the site
bindings of the Web application

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

Explanation:
New-SPSite -Url “<URL for the new site collection>”-OwnerAlias “<domain\user>” -Template $template
http://technet.microsoft.com/en-us/library/cc263165.aspx#section2