physical transmission media the physical path over which communication takes place is called the physical transmission medium types of cables used as transmission medium are twisted pair cable coaxial cable fiber optic cable twisted pair cable one of the oldest and still in use transmission medium is twisted pair cable twisted pair cable consists of pairs of insulated copper wires twisted together there are two types of twisted pair cables shielded twisted pair cable and unshielded twisted pair cable this is shielded twisted pair cable and this is unshielded twisted pair cable advantages of twisted pair cable twisted pair cables are cheaper they are flexible they are light in weight and easy to install coaxial cables a coaxial cable is an insulated copper cable used to carry high frequency data signals such as voice images videos and text the coaxial cable has a conductor placed in center surrounded by multiple protective shields and an outer jacket that ensure noise and distortion free transmission of high frequency data advantages of coaxial cable coaxial cables can transmit data much faster than twisted pair cables they are less prone to noise they can control multiple frequencies fiber optics cable fiber optics cable consists of hair like strands of glass or any transparent material which can pass light at high quality to carry light signals it can also send and receive a wide range of data frequencies at a time at a speed matching to the speed of light fiber optic cables are made up of three components transmitter receiver and fiber optic cable a transmitter transform electrical signals into light waves fiber optic cable used as a medium for carrying light waves a receiver receives the light signals and converts them into electrical signals advantages of fiber optic cable fiber optic cable minimizes the sparking risk provides high bandwidth over long distance question time [Music] [Music] [Music] every week you will be notified by a new video so don't forget to subscribe and click the notification bell thank you for watching make it easy education