Depends upon what kind of equipment you are connecting? Data Transfer speeds required, distance between the connections, environment (Electra magnetic interference, inside, outside, underground).
It's a cable used to connect from a Cisco router's DB60 serial port to a telecommunication company's equipment which provides you with a data link.
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
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.
A network cable is what is used to connect your television or other electronic device to another electronic device to receive data. The cable cord that is plugged into your television is a network cable.
You can not only the cable company can manage it with special equipment
Either connect via a wireless network, connect through a 3G network or connect your laptop with an ethernet cable.
How can I configure straight through cable?
If both PCs have ethernet cards, the best cable to use would be a crossover cable. A crossover cable is almost the same thing as a regular ethernet cable, except the wires inside the connector are reversed on one end. This reversing of the wires allows you to connect a crossover cable between two PCs without any other network equipment like a switch or a hub.
a modem
An ethernet adapter is the component that allows you to connect to your internet modem or computer network. Upon connecting your ethernet cable, you will be able to access the internet or computer network to which you are connected.