Multiple choice

In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?

  1. Coax

  2. Fiber

  3. Cat5e UTP

  4. Cat6 UTP

  5. STP

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fiber optic cable is immune to electromagnetic interference (EMI) and radio frequency interference (RFI) because it transmits light rather than electrical signals. It also has no electrical conductivity, eliminating shock hazards in environments with high voltage or explosive atmospheres. Copper media (coax, UTP, STP) are susceptible to EMI and can conduct hazardous voltages.