In broadband, optical fiber is the fastest if conditions permit. 1, fixed IP (I mean public IP) fiber, this broadband, from photoelectric converter to electrical signal, that is, converted into network cable, directly to the computer without going through network equipment (routing or switching), is the fastest, and the uplink and downlink rates are the same, but the cost is very high, so it is not recommended for personal use.

2, the LAN form, that is, the network cable directly to the home, this is mostly * * *, a few meters to enjoy, or relatively stable.

3.ADSL needs a telephone line, and the uplink and downlink speeds are different, and uploading is several times slower than downloading (and now the broadband new community of ADSL can reach 3M and 4M, and the lines in the old community are aging, and some of them are disconnected at 2M). In fact, the download speed has a lot to do with the download point, that is, if you are Unicom's broadband, look for Unicom's download point, which is faster.