In my humble opinion topologilinux would not be my first choice as a new linux user. Never the less -
is used to check the status of, and to turn up/down network interfaces.
is always handy to see if you have internet connectivity
is handy to configure a network interface -get ip address and such.
to read more about the above commands
do yourself a favor and try a more user friendly, mainstream distro for your first go at, what many of us believe, is the best OS option on this particular planet.