2.2 Network Media (Transmission Media) Flashcards
For data to be transmitted from one location to another, a _ or _ must be used.
physical pathway or medium
Pathways that transmit data from one location to another are called _.
transmissions media
Transmissions media can be either _ or _.
physical or wireless
The physical transmission use _, _, or _.
wire, cable, and other tangible materials
_ send communications signals through the air or space.
Wireless transmission media
_ use wire, cable, and other tangible materials.
The physical transmission(media)
Wireless transmission media send communications signals through the _ or _.
air or space
The physical transmission media are generally referred to as _.
cable media
Wireless media include _, _, _, _ and _.
cellular radio, microwave transmission, satellite transmission, radio and infrared media
Modern networks primarily use _ types of media to interconnect devices and to provide the pathway over which data can be transmitted. These are:
Copper cables, Glass or plastic fibers (fiber optic cable), Wireless transmission
T/F
The signal encoding that must occur for the message to be transmitted is the same for each media type.
False, it’s different
On _, the data is encoded into electrical impulses that match specific patterns.
metallic wires
_ rely on pulses of light, within either infrared or visible light ranges or in wireless transmission, and patterns of electromagnetic waves depict the various bit values.
Fiber optic transmissions
T/F
Different types of network media have different features and benefits.
True
T/F
All network media have the same characteristics and are appropriate for the same purpose.
False, they don’t
_ is an electric or electromagnetic form of data that passes over transmission media.
Signal
_ is a long thin piece of metal that is used to fasten things or to carry
electric current.
A wire
The transmission medium can be divided into two broad categories: _ and _.
wired or guided media and wireless or unguided media
_ are those that provide a conduit from one device to another.
Guided media
Guide media includes , and _.
twisted-pair cable, coaxial cable and fiber-optic cable
A signal traveling along any of these media is directed and contained by the _ limits of the medium.
physical
_ and _ use metallic (copper) conductors that accept and transport signals in the form of electric current.
Twisted-pair and coaxial cables
_ is a cable that accepts and transports signals in the form of light.
Optical fiber
Twisted-pair and coaxial cables use metallic (copper) conductors that accept and transport signals in the form of _.
electric current