Today, it is Cat5 that is commonly used, with RJ45 male ends.
VGA cable
100 meters or 328 feet
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Only two computers, can be connected to a crossover cable, although three can be supported as well, if one has two or more Network Cards (NIC Cards) installed in one workstation. this kind of Network is Known as Peer-to-Peer.
The maximum distance of 100BaseT, also known as Fast Ethernet, is 100 meters using twisted-pair cable. Beyond this distance, signal degradation can occur, affecting network performance.
100 meters or 328 feet unless a repeater (such as a switch or a router) is placed inline.
Lan Card provides a port for a network cable to connect the pc to a network.. LAN : Local area network or Ethernet Card and Network Card
longest i have seen in a store was 100ft but if you need longer get a roll of Ethernet cable and 3 ends for it then make your own length of cable.
bus network
If you don't have at least two wireless adapters for your pcs, yes you have to have a network cable in order to connect two pcs.
If both have a network connection you can use a crossover network cable.