(WindowsServer2008R2 multimedia video tutorial. The tutorial includes: offline files, shadow copies, using program control policies, using configuration files to manage users, DFS distributed file management system, DHCP relay, DNS (DNS domain name resolution, DNS dynamic update, DNS conditions) Forwarding, DNS function dispatch), WDS (Windows deployment service), IIS (multiple websites share one IP for IIS website construction, function dispatch for IIS website construction, secure SSL socket layer for IIS website construction), NLB cluster, IPsec ( IP installation policy).)