Network cables

• RJ-45 (ethernet): 8 pins
• twisted pair: twisting counters antenna effect and thus signal interference
  • different categories with varying shielding and bandwidths (e.g. CAT5 or CAT6)
  • may have shielding, e.g. metal foil
• fibre optic
  • core and cladding made of different refraction index materials
  • single or multi mode (thicker, signal can travel at varying angles and transversal speed - delay distortion)
• plenum-rated: for HVAC systems, not releasing toxic fumes under heat