Your company has a main office and 10 branch offices. Each office connects to the Internet by using a direct link. 
The main office connects to the branch offices by using a WAN link. You plan to deploy Exchange Server 2010 servers in each office. 
You need to design Active Directory to meet the following Exchange Server 2010 requirements：
.Users must be able to access their mailboxes if a single domain controller fails 
.Users must be able to send e-mail messages to the Internet if a WAN link fails 
What should you include in the design？（）

单项选择题You have an Active Directory forest. You plan to deploy an Exchange Server 2010 organization that contains the following servers：.Two Edge Transport servers.Two Hub Transport servers You need to recommend changes to the organization to ensure that e-mail messages can be sent to the Internet if a single transport server fails.  What should you recommend？（）

A.Configure shadow redundancy for the Hub Transport servers.
B.Implement failover clustering on both Hub Transport servers.
C.Configure both Edge Transport servers as source servers for a Send connector.
D.Create one mail exchange （MX） record and one SRV record for each Edge Transport server on the internal DNS zone.

单项选择题Your company has an Exchange 2010 organization that contains multiple Hub Transport servers. You have a line-of-business application that relays e-mail messages by using a Hub Transport servernamed Hub1.  The application only supports sending e-mail to a single SMTP server.  You need to ensure that the application can relay e-mail messages if Hub1 fails.  What should you do？（）

A.Implement log truncation
B.Install and configure failover clustering on the Hub Transport servers.
C.Implement Windows network load balancing on the Hub Transport servers.
D.Create multiple MX records for the Hub Transport servers in the internal DNS zone.

单项选择题Your company has an Active Directory forest named contoso.com.  You plan to deploy an Exchange Server 2010 organization that will contain two servers.  Each server will have the Client Access server role， the Hub Transport server role， and the Mailbox serverrole installed.  You plan to add both servers to a database availability group （DAG）.  You need to recommend a high-availability solution for the Client Access server role.  Your solution must ensure that users are not prompted to authenticate if a Client Access server becomesunavailable.  What should you recommend？（）

A.Create and configure a Client Access server array，and then install a hardware load balancer.
B.Create and configure a Client Access server array，and then install Windows Network Load Balancing on both servers.
C.Deploy Microsoft Internet Security and Acceleration （ISA） Server 2006，and then implement DNS round robin.
D.Deploy Microsoft Internet Security and Acceleration （ISA） Server 2006，and then install Windows Network Load Balancing.

单项选择题You have an Exchange Server 2010 organization and an Active Directory Rights Management Services（AD RMS） server.  All users access their mailboxes by using Outlook Web App （OWA）.  You need to plan a security solution for the organization to meet the following requirements： .Secure messages by using administrator-defined templates  .Ensure that e-mail messages sent by users can be stored in an encrypted format  What should you include in the plan？（）

A.a legal hold
B.Domain Security
C.Outlook Protection Rules
D.Secure/Multipurpose Internet Mail Extensions （S/MIME）

单项选择题You have an Exchange Server 2010 organization.  Your company has a relationship with another company.  The partner company has an Exchange Server 2010 organization.  You need to recommend a security solution to meet the following requirements：  .Ensure that all e-mail delivery between your servers and the partner companys servers is encrypted .Ensure that all communication between your servers and the partner companys servers is authenticated What should you include in the solution？（）

A.Active Directory Rights Management Services （AD RMS）
B.Domain Security
C.Forms-based Authentication
D.Secure/Multipurpose Internet Mail Extensions （S/MIME）