Wireless or Unbounded Media

Question 1

refers to a wireless medium that is used for multicast communications (e.g. radio and TV broadcasting, wireless local loop, mobile communications, and amateur radio) and pagign systems over long distances.

Answer 1

Radio Wave

Question 2

An .., which is also known as aerial, refers to a metallic structure that acts as a transducer that converts electrical energy to electronomagnetic energy (upon transmission of signal) and vice-versa.

Answer 2

Antenna