iwconfig
iwconfig
You're seeing the message because the network interface isn't recognized in your WSL environment. Try connecting a physical USB Wi-Fi adapter or using a different method to connect your Ubuntu machine, then run `iwconfig` again to verify the signal strength.
The issue isn't clear from the link. You're likely aiming for a hands-on test, as technical problems often need real-world methods.
Use various tools ranging from programs to command-line utilities to assess signal quality. For instance, you can run a command like this in Windows: (netsh wlan show interfaces) -Match '^\s+Signal' -Replace '^\s+Signal\s+:\s+','' which displays signal strength as a percentage.