These days is mostly cat 5e/cat 6 for the LAN, maybe some optical fiber
The WAN connection could be a multitude of thing's although, again, you'd expect it presented as either cat5,6/rj45 or fiber optic.
By far, the most common cable is Ethernet. It's not unheard of to use phone lines (modems), or Coaxial (cable modems).
Google any of them for more information.
an RG-6 Cable should be used. Trolled
Console cable. DB4
rg6
You need to use a straight type of connection. 568A or 568B depending which type your network is using.
BNC
BNC connecter
BNC Connector
Today's standards use Cat5 cable. Cat6 is newest but more expensive and harder to install.
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.
A Crossover Cable is used to connect 2 PCs (when a hub or switch is not used) to make the simplest network of all. (6th Edition, Page 852)
You should use an RG-6 cable RG-6 A type of coaxial cable with an impedance of 75 ohms and that contains an 18 AWG core conductor. RG-6 is used for television, satellite, and broadband cable connections. Source = Network+ Guide to Networks (Fifth Edition) by Tamara Dean
Network cables are used to transfer data packets from one destination to the other. Ther are different types of cables they are Fiber optic cable, Twisted pair cable and copper cable