Which of the following solutions will encapsulate IPv6 packets with IPv4 headers？（） ["Create an IPv4 tunnel and assign the tunnel IPv6 addresses","Create IPv4 interfaces on both ends of the network， and use either static routes or a routingprocess to direct IPv6 packets through those interfaces","IPv6 packets cannot be encapsulated with IPv4 headers because the addresses are notcompatible","Create IFV6 interfaces on both ends of the network， and use static routes to point the IPv4address to those interfaces","Use an IPv6 routing protocol like OSPFv3 and assign IPv4 packets to that process","Create an IPv4 tunnel and use the tunnel mode ipv6ip command"]
某企业通过内部挖潜，在不增加设备人员的情况下，增加了产出，并使得产品平均成本下降5%，这种经济状态属于（） ["内部规模经济","外部规模经济","范围经济","学习经济"]
You need to deploy a read-only domain controller （RODC） that runs Windows Server 2008 R2. What is the minimal forest functional level that you should use（） ["Windows Server 2008 R2","Windows Server 2008","Windows Server 2003","Windows 2000"]
《世说新语》
目前使用最普遍的局域网是（） ["Internet","Intranet","Extranet","以太网"]
种姓制度
