a VOIP adapter
To do that, an additional device is required, a network hub or a network switch, which all computers in the network segment should have to be connected to.
Media is always required to connect one device to another on a network. It doesn't matter if it is a client server network or a peer to peer network.
node
A network ready device is a device that has the potential to connect to a network, natively it isn't connected to a network, nor is it a network, but with the appropriate configuration and possibly with the addition of components could be connected.
NIC (Network Interface Card)
valid IB
You can connect your device to internet network wirelessly.
Switch
a modem
One device that is shared on the network is a router. This is the one that will connect the various devices to the shared network.
A mobile phone.
a modem