Physical Layer Standards

• The Entire family of IEEE LAN Standards 202011220920 Ethernet Standards (Physical) that together define the Physical Layer & the Data-Link Layers of the Wired LAN technology is referred to as an Ethernet.

  Comparisons Between UTP & Fiber Optic:

  Criteria	UTP	Multi-mode	Single-Mode
  Relative Cost of Cabling	Low	Medium	Medium
  Relative Cost of Switch Port	Low	Medium	High
  Approximate Max Distance	100m	500m	40km
  Relative Susceptibility to Interference	Some	None	None
  Relative Risk of Copying from Cable Emissions	Some	None	None

Reference:

CCNA 200-301 OCG, Volume 1, Pg. 49 - Wendell Odom.