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Module 5: Part 1, or, or, or - Coggle Diagram
Module 5: Part 1
Important NIC settings
Duplex - Direction of signal travel
Multiplexing - Number of signals that can travel the media simultaneously
Frequency Divison Multiplexing (FDM) - Used on copper cables, assigns different frequencies to subchannels.
Wavelength Divison Multiplexing (WDM) - Used on fiber-optic cables, divides light beams into different wavelengths
Noise or interference - can degrade or distort a signal
Measured in dB (decibels)
EMI (electromagnetic interference)
Caused by: motors, power lines, televisions, copiers, fluorescent lights, microwave ovens, manufacturing machinery, and other sources of electrical activity
Crosstalk
Occurs when: a signal traveling on one wire or cable infringes on the signal traveling over an adjacent wire or cable
Frequency
Measured in MHz (megahertz) -
Measured in GHz (gigahertz) -
Bandwidth
Measured in Mbps (megabits per second)
Measured in Gbps (gigabits per second)
Throughput
Mbps (megabits per second)
Gbps (gigabits per second)
Latency - Delay between data leaving the source and arriving at the destination
Measured by Round Trip Time (RTT) in milliseconds
Jitter (Packet Delay Variation or PDV) - is when packets experience varying delays and arrive out of order
Attenuation - Signal strength loss over distance
Repeaters - used to boost and regenerate signals.
Gbps & Mbps - refers to number of data bits (0s and 1s) received across a connection each second
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