[Cisco 640-878]Which three Cisco platforms are classified as core routers?

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#1

Which three Cisco platforms are classified as core routers? (Choose three.)

A. Cisco XR 12000
B. Cisco ME 3400
C. Cisco ASR 1006
D. Cisco CRS-3
E. Cisco ASR 9010
F. Cisco 3900

Answer: ADE

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