.......... cables are composed of a glass or plastic inner core surrounded by cladding, all encased in an outside jacket.

........... cables carry data signals in the form of light.

In a fiber-optic cable, the signal is propagated along the inner core by .............

............ media transport electromagnetic waves without the use of a physical conductor.

Radio waves are

Microwaves are

......... are used for cellular phone, satellite, and wireless LAN communications.

............. are used for short-range communications such as those between a PC and a peripheral device.

Transmission Media carries information in ............ format.

How many wires of insulated coppers are present in twisted pairs?