LAN CABLING

[wilvir]

I have 3 sets of pc in room A and also have another 3 sets of pc in room B. how many switches do i need in order to network the 6 pc, by the way the distance between the two rooms is 120 meters

 

[Emerald]

the max distance of a network cable is 100 meters or 330 feet

 

[Kewlx25]

one switch half-way in-between both rooms?