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Chapter outline: * Sending bits with electricity and copper wires * (AC)
(AC)
Sending bits with light and fiber-optic cables * Frequency
Amplitude
Phase
Frequency
Amplitude
Phase
Sending bits with radio waves and no cable

Electrical Current – the amount of electricity that flows past a single point
Electrical Current – the amount of electricity that flows past a single point

Sending voiceand data from mobile phones through wireless wan
Data: amplitude and phase shift
Sending voiceand data from mobile phones through wireless wan
Data: amplitude and phase shift
Direct Current (DC) – flows in one direction.
Alternating Current (AC) – changes direction over time.
Direct Current (DC) – flows in one direction.
Alternating Current (AC) – changes direction over time.
Creating Circuits using Network Cable
Creating Circuits using Network Cable

Sending Bits with Radio Waves and No Cables (Wireless)
Sending Bits with Radio Waves and No Cables (Wireless)
Sending Data over Electrical Circuits
Sending Data over Electrical Circuits
Flexible cord with an outer plastic cover ( jacket) that holds wires (conductor).

Flexible cord with an outer plastic cover ( jacket) that holds wires (conductor).

-Bit rate over 1 circuit
-Encoding bit over 1 circuit
-Sending bits over multiple circuits

-Bit rate over 1 circuit
-Encoding bit over 1 circuit
-Sending bits over multiple circuits

SENDING BITS (DATA) USING ELECTICITY, CABLES, RADIO WAVES, AND WIRELESS
SENDING BITS (DATA) USING ELECTICITY, CABLES, RADIO WAVES, AND WIRELESS Radio waves- have energy level, can be changed and sensed by networking devices.
Wireless WAN and LAN- both use radio wave and no cables; mobile phone networking
Radio waves- have energy level, can be changed and sensed by networking devices.
Wireless WAN and LAN- both use radio wave and no cables; mobile phone networking
The basics of Optical transmission
-Fiber Optic cable
-Fiber Optic transmitters
-Fiber Optics in Ethernet
-Fiber Optics in LAN, WAN
The basics of Optical transmission
-Fiber Optic cable
-Fiber Optic transmitters
-Fiber Optics in Ethernet
-Fiber Optics in LAN, WAN
Sending Bits with Lights and Fiber-Optic Cable
Sending Bits with Lights and Fiber-Optic Cable
Using Ethernet LANs
Using Ethernet LANs
-UTP- unshielded twisted-pair.
-Bit rate and encoding.
-RJ-45 connectors and sockets.
-Ethernet cable pinpoint

-UTP- unshielded twisted-pair.
-Bit rate and encoding.
-RJ-45 connectors and sockets.
-Ethernet cable pinpoint

T

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