04-01 Physical Layer - Terms Flashcards
a method of converting a stream of data bits into a predefined “code”
encoding
the way bits, 1s and 0s, are represented on the media
signalling method
the capacity at which a medium can carry data; the amount of data that can flow from one place to another in a given amount of time
bandwidth
the amount of time, including delays, for data to travel from one point to another
latency
the measure of the transfer of bit across the media over a given period of time
throughput
the measure of usable data transferred over a given period of time
goodput
the farther a signal travels, the more it deteriorates. This is referred to as…
signal attenuation
potential sources include radio waves and electromagnetic devices, such as fluorescent lights or electric motors
EMI or RFI
a disturbance caused by the electric or magnetic fields of a signal on one wire to the signal in an adjacent wire
crosstalk
