多项选择题

Which three of these items are IPv6 transition mechanisms? （）(Choose three.)

A. ISATAP
B. NATV6
C. manually configured overlay tunnels
D. dual stack configurations

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单项选择题

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

A.A
B.B
C.C
D.D

单项选择题

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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