Your buddy is having problems with his wifi network in his flat, which is dropping connections or running very slowly. What is the BEST tool for determining the optimal channel to use?

A wireless access point (WAP) provides wireless LAN (WLAN) connectivity, however it may not solve the network's problems. Your friend must identify which wireless channel has the least traffic and configure their Wi-Fi to use it. They will require a Wi-Fi analyzer, which can be a standalone device or as easy as an app on a smartphone. When network cables are not labeled, a toner probe is used to verify which one is attached, and a cable tester evaluates if the wires are correctly connected.