试题详情
- 多项选择题What are two characteristics of dual-ring interconnect in SDH networks? ()
A、 It protects signals against node failures between rings.
B、 It protects signals against node failure within a single ring.
C、 It allows for traffic to be preempted when a ring switch occurs.
D、 Traffic can be dropped and continued at interconnecting nodes.
E、 It protects preemptible traffic from being dropped when a ring switch occurs.
- A,D
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