How to lay an organization's network through one wire?

Question

Computer networks

Good day (unfortunately, everyone is different).
In view of the repair in the educational institution, they came up with the idea of ​​laying a network and connecting computers in the classrooms, one per room. And they set the task of minimizing costs - they say, the cheaper and fewer wires, the better. At first I thought to throw a wire from each computer, and let everything go through the switch, but they don’t give it. They didn't let me spend money on wi-fi either. Then the idea arose to run one twisted-pair wire through all the cabinets with an outlet in each cabinet to hook up a computer in the room to the general network (I saw this, but alas, I didn’t find out in more detail). So I would like to clarify how such a network can be created with a minimum of costs and good stability for about 10-15 machines.
Thank you all in advance.

Answer 1

An organization's network through one wire is a coaxial cable :-) The cable is sold in any radio store, but you need to look for coaxial network devices in some computer garbage dumps :-) Well, you need to understand that these network devices will reach speeds of 10 megabit, and the entire segment will be divided by the throughput by the number of machines. That is, if, for example, a switch can provide a speed of 100 megabits between several pairs of machines at once, then in a coax 10 megabits are divided into all machines in the segment. But 10 kilo rubles can be met, I think yes :-)
Oh, well, yes, and one more thing - coaxial network cards were only for ISA and PCI connectors :-) No PCI-E :-)

Answer 2

Budget - the less the better, but the ceiling is not more than 10k. The distance is obtained no more than 100-150 meters.

Answer 3

a wire entered the room, terminated, inserted into the switch, left the switch, went to the next room ...
But it will turn out even more expensive;) Don't invent, pull an independent cable into each room

Answer 4

throw a plan of the building where you need to breed. I'll tell you what's best

Answer 5

on another floor, put 2 switches of 8 ports in approximately the same way as it costs. Throw the cable to them from this floor.
And if you buy used switches - it will be even cheaper.

Answer 6

the simplest and most working option is to switch to each room and connect all the switches with a cable in series, this is if there are 2 or more computers in each room, and if not, then bring everything together as in the figure, it will work slowly and badly.

Answer 7

In my opinion, the most rational option is a 24-port switch in the zone of abundance of computers, a couple of hubs in the distance. and one way or another, 30 thousand will come out.