This is a test of commonsense. Complete the next sentence:

How to wire cable tv
Decide if you want to install a modem in your cable tv system.
A modem provides internet service through your cable system.
Choose an in-line amplifier.
In-line amplifiers are available at electronic stores. Use an in-line amplifier if your splitter has more than 2 outlets or if you intend to expand the cable wiring in the future.