Your network contains an internal network and a perimeter network. The internal network contains an Active Directory forest. The forest contains a single domain. 
You plan to deploy 10 Edge Transport servers on the perimeter network. 
You need to recommend a solution for the Edge Transport server deployment. The solution must meet the following requirements：
.Allow administrators to apply a single security policy to all Edge Transport servers .Reduce the administrative overhead that is required to manage servers
.Minimize the attack surface of the internal network 
What should you recommend？（）

单项选择题You have an Exchange Server 2010 organization.  An Edge Transport server sends and receives all e- mail messages from the Internet.  You notice that some servers on the Internet identify e-mail messages from your organization as spam. You need to minimize the possibility that e-mail messages sent from your organization are identified as spam.  What should you do？（）

A.Implement Microsoft Forefront Security for Exchange Server.
B.Create SenderID TXT records for the Edge Transport servers.
C.Configure the Edge Transport servers to use a real-time block list （RBL）.
D.Install a server certificate from a trusted third-party certification authority （CA）.

单项选择题You have an Exchange Server 2010 organization. You plan to deploy two new Mailbox servers.  Both Mailbox servers will be members of a database availability group （DAG）. You need to recommend a hard-disk configuration for the new servers. Your recommendation must meet the following requirements： .Maximize write performance .Prevent a switchover if a single disk fails Which disk configuration should you recommend？（）

A.RAID 0 array
B.RAID 1 array
C.RAID 5 array
D.RAID 10 array

单项选择题Your network contains 20 offices. Each office contains 1，000 users.  The users access their e-mail messages by using Microsoft Office Outlook. You have an Exchange Server 2010 organization.  You need to recommend an Exchange Server solution that meets the following requirements： .Ensures that users in each office download the list of recipients for their office only  .Ensures that users in each office can send e-mail messages to any user in the organization  What should you recommend？（）

A.Create 20 new address lists and 20 offline address books （OABs）.
B.Create 20 new managed folder mailbox policies and 20 e-mail address policies.
C.Create 20 new dynamic distribution groups， and then create 20 new global address lists （GALs）.
D.Create 20 new mailbox databases， and then move the mailboxes from each office to a separatemailbox database.

单项选择题Your company has three offices.  An Active Directory site named Site1， Site2， and Site3 exists for each office. You have an Exchange Server 2003 organization. You deploy Exchange Server 2010 servers in Site1.  You plan to deploy Exchange Server 2010 servers in Site2 and Site3.  You need to recommend a solution that allows the Exchange Server 2010 servers to coexist with the Exchange Server 2003 servers.  Your solution must meet the following requirements： .All e-mail messages that are sent to mailboxes on Exchange Server 2003 servers from mailboxes on Exchange Server 2010 servers must be delivered directly from a server in Site2  .All e-mail messages that are sent to mailboxes on Exchange Server 2010 servers from mailboxes on Exchange Server 2003 servers must be delivered directly to a server in Site1  What should you recommend？（）

A.Create two SMTP connectors and one Active Directory SMTP site link.
B.Create a new routing group connector and modify the default routing group connector.
C.Create an X400 connector to Site1 and modify the cost value for the default routing group connector.
D.Move all Exchange Server 2003 servers and Exchange Server 2010 servers to a single routing group.

单项选择题Your network contains a single Active Directory forest.  The forest contains two domain trees named contoso.com and fabrikam.com. You have an Exchange Server 2010 organization.  The e-mail addresses for the organization are configured as shown in the following table. You need to ensure that all outbound e-mail messages from fabrikam.com appear to originate fromcontoso.com.  Users in contoso.com must be able to send e-mail messages to users in fabrikam.com by using the address format alias@fabrikam.com.  What should you do first？（）

A.Deploy an Edge Transport server.
B.Deploy a Microsoft Internet Security and Acceleration （ISA） server.
C.Modify the accepted domain entry for contoso.com.
D.Modify the accepted domain entry for fabrikam.com.