单项选择题 Your network is configured as shown in the following diagram.     Each office contains a server that has the File Services server role installed. The servers have a shared folder named Resources.   You need to plan the data availability of the Resources folder. Your plan must meet the following  requirements：   èIf a WAN link fails，the files in the Resources folder must be available in all of the offices.   èIf a single server fails， the files in the Resources folder must be available in each of the branch offices，and the users must be able to use existing drive mappings.   èYour plan must minimize network traffic over the WAN links. What should you include in your plan？（）

单项选择题 Your network consists of a single Active Directory domain. Users access and share documents by using a DFS namespace. You need to recommend a solution to manage user access to documents. The solution must meet the following requirements： èAllow for document versioning èAllow for online collaboration What should you recommend？（）

单项选择题 Your network contains a single Active Directory domain. You have 100 servers that run Windows   Server 2008 R2 and 5，000 client computers that run Windows 7.  You plan to deploy applications to the client computers.   You need to recommend an application deployment strategy that meets the following requirements：   èApplications must be deployed only to client computers that meet the minimum hardware requirements.   èDeployments must be scheduled to occur outside business hours.   èDetailed reports on the success or failure of the application deployments must be provided.   What should you recommend？（）