Which three technologies are recommended to be used for WAN connectivity in today’s Enterprise Edge designs? (Choose three.)

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Which three technologies are recommended to be used for WAN connectivity in today’s Enterprise Edge designs? (Choose three.)
A . DWDM
B . Metro Ethernet
C . Frame Relay
D . MPLS VPN
E . ISDN
F . DSL
G . Wireless

Answer: ABD

Explanation:

There is some discussion about whether ISDN not DWDM should be the answer but it does say TODAYS network

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