单项选择题 Refer to the exhibit. Which interoperability technique implemented on the dual - stack routers would allow connectivity between IPv6 sites across automatic created tunnels using the 2002::/16 prefix? （）

单项选择题 Refer to the exhibit. EIGRP has been configured on al l routers in the network. The command metric weights 0 0 1 0 0 has been added to the EIGRP process so that only the delay metric is used in the path calculations. Which router will R1 select as the successor and feasible successor for Network A?（）

单项选择题 What is the MAC address that comes from the multicast address 239.255.0.1?（）