All.People.Seem.To.Need.Data.Processing 

• Application(7)
• Presentation(6)
• System(5)
• Transport(4)
• Network(3)
• Data-Link(2)
• Physical(1)

Unshielded twisted pair

• 4 pairs of wires 
• RJ 45/ RJ 11 coverings

Shielded Twisted pair

Coaxial Cable (copper)

• Solid Copper core on the inside that is surrounded with an outer casing
• Connectors: F type (cable T.V)  and BNC 
• Speed: 10 Mbps
• Common Network: Star and Bus

Has fiber on the inside

• Uses light to transfer data
• Transmission Speed: 40,000 Mbps
• Distance:500meters- 100km (with repeaters)
• Glass or plastic core
• Connectors: ST, SC, FC, FDDI, LC, Bionic,SMA