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TOPIC 7: NETWORK AND COMMUNICATION - Coggle Diagram
TOPIC 7: NETWORK AND COMMUNICATION
Transmission Media
...carries one or more communications signals
Broadband media transmit multiple signals simultaneously.
Bandwith; The amount of data, instructions and information that can travel over transmission media sometimes.
Categories
Guided
wire and cables
Twisted-Pair cables
Unshielded Twisted-Pair (UTP) cables
Shielded Twisted-Pair (STP) cables
Unguided
wireless transmission (radio, microwave, infrared, sound and sonar)
Physical Transmission Media
Coaxial Cable
Coaxial cables or coax, carry signals of higher frequency (100KHz-500MHz) than UTP cables.
Uses for cable television.
Outer metallic (woven or braided metal) wrapping serves both as a shield serves both as a shield against noise and as the second conductor that completes the circuit.
Wireless Transmission Media
Broadcast Radio
...wireless transmission medium that distributes radio signals through the air over long distances such as between cities, regions and countries.
Cellular Radio
...form of broadcast radio that is used widely for mobile communications, specifically cellular telephones.
Microwave
...radio waves that provide a high-speed signal transmission.
Communication Protocol and Networking Standard
Ethernet
…network standard that specifies no central computer or device on the network (nodes) should control when data can be transmitted.
Token Ring
The token ring standard specifies that computers and devices on the network share or pass a special signal (token).
TCP/IP
…is a network protocol that defines how messages (data) are routed from one end of a network to another
TCP - Software that breaks messages into packet, hands them off to the IP software for delivery, and then order and reassembles the packets at their destination.
IP - Software that deals with the routing of packets through the maze of interconnected networks to their final destination.
Wi-Fi
…identifies any network based on the 802.11 standard that specifies how two wireless devices communicate over the air with each other.
LTE
…network standard that defines how high-speed cellular transmission use broadcasts radio to transmit data for mobile communications.
RFID
…is a protocol that defines how a network uses radio signals to communicate with a tag placed in or attached to an object, an animal or a person.