Which configuration will enable OSPF for IPv6 on FastEthernet 0/0/0?（）

In a high-availability network, which command, when placed on ports that have connected end stations, will allow you to prevent delays in service for end stations by placing a port in blocking mode?（）

A. enable backbone fast
B. enable uplink fast
C. disable portfast
D. enable portfast

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In a RSTP implementation, which of the following two link types are used? （）(Choose two.)

A. Shared
B. Point-to-Point
C. Designated
D. Multiaccess non-broadcast

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