单项选择题
A、1024 B、4096 C、512
A、1U B、2U C、3U
A、SyncE with SSM; B、IEEE 1588 V2; C、2Mbps/2MHz BITS; D、1 pps/TOD输入/输出。
A、Continuity and Connectivity Check (CC); B、LB(Loopback); C、LM(Frame Loss Measurement); D、DM(Packet Delay and Packet Delay Variation Measurements (DM)
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