多项选择题
A. Install the Routing and Remote Access Services role service.
B. Run the netsh ras ip set access ALL command.
C. Run the netsh interface ipv4 enable command.
D. Enable the IPv4 Router Routing and Remote Access option.
单项选择题 You have a DHCP server that runs Windows Server 2008 R2. You restore the DHCP database by using a recent backup.You need to prevent DHCP clients from receiving IP addresses that are currently in use on the network. What should you do？（）
单项选择题 You have a DHCP server that runs Windows Server 2008 R2. The DHCP server has two network connections named LAN1 and LAN2.You need to prevent the DHCP server from responding to DHCP client requests on LAN2. The server must continue to respond to non-DHCP client requests on LAN2. What should you do？（）
单项选择题 You have a DHCP server that runs Windows Server 2008 R2.You need to reduce the size of the DHCP database. What should you do？（）