Router R1 has been conf igured with an ipv6 route 2000::/64 S0/0/0 64 command.Which of the following does the 64 at the end of the command represent?（）
- A、Metric
- B、Administrative distance
- C、Timeout (seconds)
- D、Prefix length
- E、Interface ID
正确答案:B
答案解析:有
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