Intro to Transmission Media

What is a transmission medium?

• Anything that can carry information from a source to a destination

• The physical limits of a medium that contain a signal

• The conversion of data from one form to another

• The electromagnetic energy propagated through transmission media

What are the two broad categories of transmission media?

• Bounded media and unbounded media

• Metallic cable and fiber-optic cable

• Twisted-pair cable and coaxial cable

• Ground propagation and sky propagation

Which of the following is an example of bounded media?

• Free space

• Radio waves

• Twisted-pair cable

• Line-of-sight propagation

What is the transmission medium used in fiber-optic cables?

• electrical current

• Metallic conductors

• Light

• Radio waves

What are some applications of fiber-optic cables?

• Transmitting telephone signals

• Internet communication

• Cable television signals

• All of the above

What is an example of unbounded transmission media?

• Twisted-pair cable

• Coaxial cable

• Free space

• Optical fiber

What are the three types of wave propagation in unbounded transmission media?

• Ground propagation, sky propagation, and line-of-sight propagation

• Radio waves, microwaves, and infrared waves

• Twisted-pair, coaxial, and fiber-optic

• Metallic cable, fiber-optic cable, and free space

Which type of wave propagation allows for greater distances with lower output power?

• Ground propagation

• Sky propagation

• Line-of-sight propagation

• Infrared waves

What are the advantages of radio waves in wireless communication?

• Omnidirectional transmission

• Ability to penetrate walls

• Interference-free communication

• All of the above

What are the applications of microwaves in wireless communication?

• Cellular phones

• Satellite networks

• Wireless LANs

• All of the above