Fitting Ethernet based LAN

This time something strictly connected to my education profile. We are transferring the laboratory of cryogenics. In the new rooms we need LAN based on Ethernet standard. I've spent some hours clamping and marking all these lines. There are four rooms in total intended for the new laboratory: cryogenic lab, office, dark-room and workshop.

Pic. 1 - 24 port switch.

Pic. 2 - Cables.