题目内容

起重用钢丝绳的试验周期是（）个月。

A. 三
B. 六
C. 十二
D. 二十四

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When using Overlay Transport Virtualization （OTV）， how do L2 multicast frames traverse the overlay？（）

A. The L2 multicast frames are encapsulated in an OTV packet using the configured control-group multicast address for transport
B. The L2 multicast frames are dropped because multicast cannot be carried across the overlay
C. The L2 multicast frames are encapsulated in an OTV packet using the configured data-group multicast address for transport
D. The L2 multicast frames are forwarded natively across the overlay based on their multicast ID

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