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单选题
As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）
A
24
B
4
C
3
D
16
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单选题As a CCNA candidate，you must have a firm under standing of the IPv6 address structure.Refer to IPv6 address，could you tell me howm any bits are included in each filed？（）A
24B
4C
3D
16
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