WiFi lets you use your mobile device or laptop on your network from any room and is a workaround when you don’t want to run a cable in a room. WiFi is best used as a means of convenience if you don’t want to cut into walls to run a cable, or dig up the yard. Also, if a device needs to move around, then WiFi is the right choice.
On the other hand, if you have a desktop PC, server, streaming media device (Apple TV, Roku), game console or set-top box that stays by your TV, Ethernet is still the best option. Assuming it’s easy enough to plug the devices in with an Ethernet cable, you’ll get a more consistently solid connection and better overall experience.
Sometimes you need a combination of cable and wireless. If your Internet connection is dropping or slow when using WiFi, then adding a wired device to extend the WiFi connection may be the best choice. Many people opt for an extender, but many times this may not be the best choice of equipment to solve the problem. There are a variety of WiFi products that are considered when putting together a network; access points, bridges, extenders, adapters. Adding a single device won’t necessarily fix the problem if it is not the right one and configured improperly.
The best way to ensure a quality network is to identify what you want for data, audio and video throughout your home and outdoors and then have a network specialist design and install your infrastructure.