Your network contains three Active Directory sites named Site1， Site2， and Site3. Users can only access Site1 from the Internet. 
In each site， you plan to deploy a Mailbox server and a Hub Transport server. 
You need to plan the deployment of Exchange servers to meet the following requirements：
.Ensure that Exchange ActiveSync and Outlook Anywhere clients can connect to their Mailboxes from theInternet
.Minimize hardware costs
What should you include in your plan？（）

Your network contains an internal network and a perimeter network that are separated by a firewall. The perimeter network contains an Exchange Server 2010 Edge Transport server. 
You plan to deploy an internal Exchange Server 2010 organization that meets the following requirements：.Support EdgeSync synchronization
.Support encrypted delivery of outbound e-mail messages to the Edge Transport server .Minimize the attack surface of the internal network 
Which TCP ports should you allow from the internal network to the perimeter network？（）