The BEST way to minimize the risk of communication failures in an e-commerce environment would
be to use:

A.
compression software to minimize transmission duration.

B.
functional or message acknowledgments.

C.
a packet-filtering firewall to reroute messages.

D.
leased asynchronous transfer mode lines.

Explanation:
Leased asynchronous transfer mode lines are a way to avoid using public and shared infrastructures
from the carrier or Internet service provider that have a greater number of communication failures.
Choice A, compression software, is a valid way to reduce the problem, but is not as good as leased
asynchronous transfer mode lines. Choice B is a control based on higher protocol layers and helps if
communication lines are introducing noise, but not if a link is down. Choice C, a packet-filtering
firewall, does not reroute messages.