Link for Transmission media cable https://www.technologyuk.net/telecommunications/networks/transmission-media.shtml Network Transmission Media Various physical media can be used to transport a stream of bits from one device to another. Each has its own characteristics in terms of bandwidth, propagation delay, cost, and ease of installation and maintenance. Media can be generally classified as guided (e.g. copper and fibre cable) and unguided (wireless) media. The main categories of transmission media used in data communications networks are listed below (please note that wireless transmission media will be dealt with elsewhere). Twisted pair copper cable Coaxial copper cable Optical fibre Wireless transmission Twisted pair cable [Return to top of page] Twisted pair copper cable is still widely used, due to its low cost and ease of installation. A twisted pair consists of two insulated copper cables, twisted together to reduce electrical interference between adjacent p...