What type of network device is often powered by a power inserter?

The correct answer is an amplifier. In a broadband network, amplifiers are used to boost the strength of the signal traveling through coaxial cables, which is crucial for maintaining the quality of the signal over long distances. These amplifiers often require external power sources to function properly, and that’s where power inserters come into play. A power inserter allows the amplifier to receive the necessary power while simultaneously allowing the data signal to pass through.

Other devices, like routers, modems, and switches, typically have their own built-in power supplies and do not rely on a power inserter. Routers manage data traffic between networks, modems connect to the internet service provider, and switches connect multiple devices within a local area network. While these devices may also be powered through traditional means such as wall adapters, their operational requirements differ from those of an amplifier, which specifically benefits from the use of a power inserter to maintain signal integrity in coaxial cable systems.