DRAG DROP
Match the correct equipment series on the left to the correct layer on the right.
Answer: 
Explanation:
CRS-1, CRS-3 – Core Layer
ASR 1000, ASR 9000, 7600 Series – Edge Layer
ASR 9000, 7600 Series, ME 3800X, ASR 903 – Aggregation layer
ONS 15454 , CPT Series – Optical Infrastructure layer
Catalyst switches, Metro Ethernet Switches – Access Layer
Cisco ISR Series Router – Customer Premises