Will there be a gigabit network between computers if connected via a gigabit router to a 100Mbit router?

Question

network hardware

On the network, three computers with a gigabit port each are connected to a TP-LINK TL-SG1008D gigabit switch. The switch is connected to a Mikrotik hap lite rb941-2nd router without a gigabit port.
The question is whether there will be data exchange between computers within the network at speeds up to gigabit in this case?

Answer 1

If they are on the same subnet, then communication via internal IP addresses will be at a speed of 1 Gb / s.