问题:
A . An equal amount of working and protect bandwidth is required.
B . DCC bandwidth is not large enough to handle K1/K2 processing.
C . Switch times would exceed 50 ms for an STM-1 MS-SPRing ring.
D . There is not enough bandwidth in an STM-1 ring to justify MS-SPRing protection.
● 参考解析
本题暂无解析
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