Using a private LAN, which hardware components are needed to configure an X.25AM line with a
fault tolerant path from the s-series to the SWAN concentrator?

A.
two ports on one E4SA adapter, one SWAN concentrator, a SWAN adapter cable, one micro
hub and RJ45 cabling

B.
one SWAN concentrator and a SWAN adapter cable

C.
two E4SA adapters, one SWAN concentrator, a SWAN adapter cable and one micro hub and
RJ45 cabling

D.
two E4SA adapters, one SWAN concentrator, a SWAN adapter cable and two micro hubs and
RJ45 cabling