What OSI layer is DWDM?

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Tags

1. #optical
2. #photonics
3. #multiplexing
4. #transmission
5. #wavelength
6. #layer
7. #transport
8. #considered
9. #networking
10. #dense
11. #specifically
12. #layers
13. #remember
14. #working
15. #technology
16. #division
17. #already
18. #seven