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You are evaluating whether to add an additional hard disk drive to each file server and create a striped volume for the data files. Which storage requirement is met by adding the hard disk drive and creating the striped volume？（）
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？（）
Your network consists of a single Active Directory forest. The forest functional level is Windows Server 2008 R2. The forest contains two domains named contoso.com and na.contoso.com. Contoso.com contains a user named User1. Na.contoso.com contains an organizational unit （OU） named Security. You need to give User1 administrative rights so that he can manage Group Policies for the Security OU. You want to achieve this goal while meeting the following requirements： èUser1 must be able to create and configure Group Policies in na.contoso.com. èUser1 must be able to link Group Policies to the Security OU. èUser1 must be granted the least administrative rights necessary to achieve the goal. What should you do？（）
Your company has Windows Server 2008 R2 file servers. You need to recommend a data recovery strategy that meets the following requirements： èBackups must have a minimal impact on performance. èAll data volumes on the file server must be backed up daily. èIf a disk fails， the recovery strategy must allow individual files to be restored. èUsers must be able to retrieve previous versions of files without the intervention of an administrator. What should you recommend？（）
