A dark fiber cut isolates a city's primary and DR data centers that had only one DCI path. Which interconnect design response is required?
Select an answer to reveal the explanation.
Short Explanation
One dark fiber is a single point of "oops." DCI resilience means diverse redundant interconnect paths so a cut does not orphan the DR site.
Full Explanation
Resilient DCI designs provision redundant interconnects with path diversity so a single dark-fiber cut cannot isolate sites. Relying on one optical path creates a single point of failure for any stretch or overlay that depends on that interconnect. Redundancy is an interconnect network-type design property independent of whether the overlay is L2 or L3.