When designing a WAN backup for voice and video applications, what three types of connections
should be used? (Choose three.)

A.
Private WAN

B.
internet

C.
ISDN

D.
MPLS

E.
dial-up

F.
ATM

G.
DSL

Explanation:

Critical thing here is voice/video backup for which we need at least 768 KB/s (CCDP)