Your company has two main offices named Main1 and Main2. An Active Directory site exists for each office. Users connect locally to servers in both offices. 
The offices connect to each other by using a high-speed WAN link. You plan to deploy Exchange Server 2010. 
You need to plan the deployment of Mailbox servers to meet the following requirements：
.Ensure that users can access their mailbox from a server in their site， if a single Mailbox server fails 
.Ensure that users can access their mailboxes remotely if a site fails 
.Minimize the number of servers
How many Mailbox servers should you include in the plan？（）

单项选择题Your network contains two data centers named Datacenter1 and Datacenter2. An Active Directory site exists for each data center.  The data centers connect to the Internet by using a direct link.  The data centers connect to each other by using a high-speed WAN link.  You plan to deploy Exchange Server 2010 Mailbox servers in both data centers. You need to plan message routing to meet the following requirements：.Ensure outbound delivery of e-mail messages if a single server fails .Automatically load balance the Hub Transport server in each site .Deploy the minimum number of servers What should you include in the plan？（）

A.In each data center， deploy one Hub Transport server. Create and configure one Send connector.
B.In each data center， deploy two Hub Transport servers. Create and configure one Send connector.
C.In each data center， deploy one Edge Transport server. Create and configure two Send connectors.
D.In each data center， deploy two Edge Transport servers. Create and configure two Send connectors.

单项选择题You have an Exchange Server 2010 organization that consists of 50 Exchange Server 2010 servers. Your companys security policy states that approved Exchange and Windows Server patches and securityupdates must be applied to all Exchange servers within one week of being released.  You need to recommend a patch management solution that meets the following requirements： .Allow administrators to manually approve patches and security updates .Allow only the installation of approved patches and security updates  .Minimize the administrative effort to deploy patches  .Minimize the deployment costs What should you include in the solution？（）

A.Microsoft Update
B.Microsoft System Center Configuration Manager
C.Windows Server Update Services
D.Windows Update

单项选择题You have an Exchange Server 2010 organization.  The organization contains two servers named Server1 and Server2.  Server1 and Server2 have the Mailbox server role and the Hub Transport server role installed. Server 1 and Server2 are members of a database availability group （DAG）.  You need to plan the deployment of Client Access servers to meet the following requirements： .Users must be able to access their mailboxes if a single server fails .Users must not attempt to connect to a failed server  What should you include in your plan？（）

A.On Server1 and Server2， install the Client Access server role. Implement failover clustering.
B.On Server1 and Server2， install the Client Access server role. Configure network interface card （NIC） teaming on each server.
C.Deploy two new Client Access servers. Implement load balancing by using DNS round robin.Create a Client Access server array.
D.Deploy two new Client Access servers. Implement load balancing by using a Windows Network Load Balancing cluster. Create a Client Access server array.

单项选择题You deploy multiple Mailbox servers.  Each Mailbox server contains a copy of a mailbox database named DB1.  You need to recommend a solution that allows administrators to remove corrupt messages that have been replicated before the corrupt messages are applied to each copy of DB1. What should you recommend？（）

A.Modify log truncation.
B.Enable circular logging.
C.Implement lagged copies.
D.Configure shadow redundancy.

单项选择题You have an Exchange Server 2010 organization.  The network contains two Mailbox servers that are configured in a database availability group （DAG）. You plan to implement a disaster recovery solution.  You need to recommend a solution that ensures that the active mailbox database copy is unaffected bythe backup process.  You want to achieve this goal while minimizing costs.  What should you recommend？（）

A.Windows Server Backup
B.Network Attached Storage （NAS） snapshots
C.Microsoft System Center Configuration Manager
D.Microsoft System Center Data Protection Manager