简述取境说。
DHCP服务器工作过程
You are configuring a new Microsoft System Center Virtual Machine Manager （VMM） 2008 R2 environment to manage your existing virtual infrastructure. The existing infrastructure includes Windows Server 2008 R2 host servers and VMware ESX host servers. You need to add a VMware ESX host server named Host1 to your VMM environment. What should you do？（） In the Computer name field of the Add VMware VirtualCenter server dialog box， type the fully qualified domain name （FQDN） of Host1.。 In the Computer name field of the Add VMware VirtualCenter server dialog box， type the fully qualified domain name （FQDN） of the VMware VirtualCenter server that manages Host1.。 In the Add Hosts wizard， select the VMware ESX Server host （any location） option. In the Computer name field， type the fully qualified domain name （FQDN） of Host1.。 In the Add Hosts wizard， select the VMware ESX Server host （any location） option. In the Computer name field， type the fully qualified domain name （FQDN） of the VMware VirtualCenter server that manages Host1.。
“卡塔西斯”是什么意思？
ACCESS数据库备份取数时下列叙述正确的有（）。
Which of the following is an OSPF configuration parameter that is used on an ABR, but not on an internal router？（）
