What are the advantages of transmission media?

Speed

Wireless networks and other transmission media have made gains in speed and reliability, but they pale in comparison to the speed that wired networks can provide. DSL internet access, for instance, will transmit data far faster than a wireless Internet connection. Wireless connections often suffer from interference and weaker signals, depending on location, affecting the speed of data transmission. Wired connections overcome both quite easily without any loss in speed.

Security

Wireless networks tend to suffer from more security attacks than wired networks. In a wired network, a hacker would have difficulty walking into a home or business and tampering with the wires. However, in a wireless network, a hacker only needs to have close proximity and a knowledge of how wireless data transmission works to get inside. A hacker can simply use a vulnerable wireless connection to surf the net, or he may steal personal data stored on a computer within the network. He also will have an easier time intercepting data sent wirelessly than data sent through a wired connection.