Transmission Media By Christopher Boehm
Overview Different types of transmission media Pros and Cons Security Issues
Coaxial Cable Used with Cable Television More expensive than phone wiring Less prone to interference than phone
More about Coaxial cable Can carry large amounts of data *Security Issue – Can be spliced easily *Solution??
Twisted Pair Copper Cable Found in most buildings in the US Inexpensive alternative to Coaxial Supports a much shorter distance Shielded and Un-Shielded
More on Twisted Pair Copper Inexpensive and widely used Easy to implement, add nodes *Security Issue – Easily spliced *Solution??
Fiber Optic Cable Newest form of cable Made of glass core and plastic covering Carries light rather than electric current Nearly impossible to splice
Pros and Cons of Fiber Optics? +Very high bandwidth +Immune to EMI +Long distances +Small size +High security - Fragile - Difficult to implement - EXPENSIVE!
Wireless Transmission Transmit over the air Use microwave, radio, and infared Typical wireless connections use radio waves
Wireless Pros and Cons +Extremely easy to implement +Reasonably low cost - VERY difficult to secure
Questions? Comments?