Microsoft MCITP Test Prep - Windows Server 2008

Answer - C - You should use a site-local address to use a unicast IPv6 address on the subnets of a private network to implement IPv6 connectivity over the subnet.

Key Takeaway: IPv6 unicast site-local addresses are similar to IPv4 private addresses. The scope of a site-local address is the internetwork of a company’s site. The initial 48 fixed bits of the site-local address are followed by a 16-bit Subnet ID field. The subnet ID field provides as many as 65,536 subnets in a flat subnet structure. The last field in the site-local address is a 64-bit Interface ID field used to identify the interface of a node on a specific subnet.