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QUESTION 46
What is the purpose of Dual Ring Interconnect in SONET rings?
A. Protects signals against a node failure in a single ring
B. Protects signals when a ring switch fails
C. Protects signals when multiple span switches fail
D. Protects pre-emptible traffic from being dropped when a ring switch occurs
E. Protects signals against intermediate node failures between rings
Correct Answer: E
QUESTION 47
Why is it important to leave some residual dispersion at an amplifier site when 10Gb/s signals in a DWDM system have gone through a dispersion compensating device?