Wi-Fi network with multiple routers and a server?

Question

WiFi

Good afternoon. The question is, how can you make a local network at an average distance through wi-fi routers so that they see each other and receive a signal as one network.
Where to dig?

Answer 1

Sex will work. The signal is unstable. Constantly switches from router to router. You need to do it through repeaters.
Faced with this.

Answer 2

If through 2a wifi-I, then google "Wireless bridge". The point is that you have WiFi-1 = access point, and WiFi-2 works as an amplifier for this access point.
If there is no equipment yet, then it is better to use WiFi + Repeater