Of course, if you use routing, you can automatically assign IP and dial up the Internet. After logging in for the first time, you can log in automatically by plugging in the network cable later. The main reason for choosing a route is to save money. Each switch must have an account and everyone must buy a network card. And the router always uses only one account. The disadvantage is that many people enjoy the internet speed, and some people may get stuck playing games when downloading or watching movies. So if the internet speed of your dormitory is ok (downloading more than 400Kb) and there are few users (less than 6 people), you can use the router completely, and it is also ok to spend money on a network card every month. If your dormitory has a particularly strong network speed (download 1M or above), you can buy a wireless router to use this network card with other dormitories and share the cost. About ten yuan per person per month is enough. Of course, it is necessary to negotiate not to leave things in prime time. I used routers and switches in college and experienced them personally. . .