试题详情

以下哪一项代表一个有效的IPv6地址?

A 2001:cf8:5403:3000:b5ea:eadd:679f:30f5

B 2001:cf8:5403:3000:b5ea:eadd:679f:30f5:af54

C 2001:cf8:5403:3000:b5ea:eadd

D 2001:cf8:5403:3000:b5ea:eadd:679f