As far as I know, 10BASE-T and 100BASE-T (types of UTP) use two pairs of wires, while 1000BASE-T has four pairs of wires. But when I look up the photo of 10BASE-T on google, it indeed contains four wire pairs which are four different colours like this below.
Is it just that it has four pairs of wires but only two of them are used to connect nodes? or Is the photo I found wrong?
Note that I am not criticizing this website.
I am quite new to network technology. Sorry if this question seems fool.