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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
24
B
4
C
3
D
16
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考题
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
24B
4C
3D
16
考题
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A mapping table must have been created.C
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had better toB
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