3.1 - Cables Intro Flashcards
Transmission Speeds:
Copper Cables
achieve speeds of up to 40 Gigabits
Coaxial– TV / Cable box
Twisted pair cable – data networking
Transmission Speeds:
Fiber Cables
achieve speeds above 100 Gigabits
Higher end networks & ISP [LC & ST connectors]
Transmission Distance
Copper Cables
can reach distances of 1,100 m [3,609 ft]
Transmission Distance
Fiber Cables
can reach distances of 40 km [25 miles]
Light pulses inside cable
Attenuation
is the loss of signal strength in networking cables or connections
o Loss as it goes through the cable
o Longer the cable = less signal strength
o Notice at about 200 ft long +
Noise Immunity
EMI = Electro-Magnetic Interference
o Signals from a device or cable, leak out & disrupt signals of another device or cable
o Happens a lot with all different types of magnetic shield things that generate electricity
o Affects signal on the cable
Noise Immunity
EMI - Copper Cables
are highly susceptible to interference
o Use shielded cable to protect against EMI
Noise Immunity
EMI - Fiber Cables
NOT susceptible to EMI since it is not copper
o Lights, NO magnetic pulse
