Refer to the table.
A customer investigates connectivity options for a DCI between two production data centers. The solution must provide dual 10G connections between locations with no single points of failure for Day 1 operations. It must also include an option to scale for up to 20 resilient connections in the second year to accommodate isolated SAN over IP and isolated, dedicated replication IP circuits. All connectivity methods are duplex 10 Gbps.
Which transport technology costs the least over two years, in the scenario?
A . Metro Ethernet
B. DWDM
C. CWDM
D. MPLS
Answer: A
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