[单选] Which one of the following statements best explains the split horizon rule?（）

You install two Exchange Server 2010 Edge Transport servers named Server1 and Server2.You need to ensure that e-mail sent from the Internet is sent to Server2 if Server1 fails.What should you do？（） Create two SRV records.Assign the SRV record for Server1 a priority of 20.Assign the SRV record Server2 a priority of 10.。 Create two SRV records.Assign the SRV record for Server1 a priority of 10.Assign the SRV record for Server2 a priority of 20.。 Create two MX records.Assign the MX record for Server1 a priority of 20.Assign the MX record for Server2 a priority of 10.。 Create two MX records.Assign the MX record for Server1 a priority of 10.Assign the MX record for Server2 a priority of 20.。 当患者出现恶心与呕吐时，护士应评估：（） 发生的时间、频率。 原因或诱因。 呕吐的特点。 呕吐物的颜色、性质、量、气味。 出现的前驱症状。 You are designing a VPN Server strategy to meet the business and technical requirement.  What should you do？ （）  Configure all client computers to point to a VPN server in Amsterdam.。  Configure all client computers to use Multilink Bandwidth Allocation Protocol （BAP）.。  Create a network Load Balancing cluster of VPN servers.。  Create a shutdown script for the VPN servers to delete the host（A） resource record of the VPN sever from the DNS database when the VPN server are shutdown.。 You work as the IT professional in an international company which is named Wiikigo. You are experiencedin implementing and administering a network operating system. You are specialized in deploying servers，configuring Windows Server 2008 Terminal services and network application services， and configuring aweb services infrastructure. There is an Active Directory domain in your company. Windows Server 2008 isrun by a server named S02. All client computers run Windows Vista. You perform the installation of theTerminal Services server role， TS Web Access role service， and TS Gateway role service on S02. Youhave to make sure that all client computers have compliant firewall， antivirus software，and antispyware. What should you do to make sure of this？（） The Request clients should be enabled to send a statement of health option in the Terminal Servicesclient access policy.。 Network Access Protection （NAP） should be configured on a server in the domain.。 The Terminal Services servers should be added to the Windows Authorization Access domain localsecurity group.。 The Terminal Services client computers should be added to the Windows Authorization Access domainlocal security group.。 内生变量 Which one of the following statements best explains the split horizon rule?（）