Which two of these best describe the implementation of a WAN Backup design over the Internet?

Which two of these best describe the implementation of a WAN Backup design over the Internet?
(Choose two.)

Which two of these best describe the implementation of a WAN Backup design over the Internet?
(Choose two.)

A.
a best-effort method

B.
bandwidth guaranteed based on interface configuration

C.
designed as an alternative to a failed WAN connection

D.
implemented with a point-to-point logical link using a Layer 2 tunnel

E.
requires no ISP coordination or involvement



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