A:AnswerThe mesh works as a wifi extender. The NETGEAR C7000 AC1900 modem/router has a nice WiFi system built in. Unless you have a multiple level very large home, the mesh system may not be necessary.
A:AnswerI always connect to the 5G network for faster speeds. Any new devices that are able to use the 5G network should be connected to it for the best performance/speeds.
I only use the standard connection for older devices, eg. Wi-Fi home security cameras that are unable to connect to 5G networks.