Which backbone medium is known for immunity to EMI?

Prepare for the Telecom Room Cross-Connection Facility Test. Utilize flashcards and multiple choice questions, complete with hints and elucidations. Gear up for your assessment!

Multiple Choice

Which backbone medium is known for immunity to EMI?

Explanation:
Signals carried as light in fiber are immune to electromagnetic interference. Fiber optics transmit data as photons through glass or plastic, so external EMI from power lines or equipment doesn’t couple into the signal. That makes optical fiber extremely resistant to noise and interference over long distances, which is ideal for backbone networks. Copper twisted pair and coaxial cables carry electrical signals and thus pick up EMI; wireless transmissions also contend with RF interference in the environment. So optical fiber is known for immunity to EMI.

Signals carried as light in fiber are immune to electromagnetic interference. Fiber optics transmit data as photons through glass or plastic, so external EMI from power lines or equipment doesn’t couple into the signal. That makes optical fiber extremely resistant to noise and interference over long distances, which is ideal for backbone networks. Copper twisted pair and coaxial cables carry electrical signals and thus pick up EMI; wireless transmissions also contend with RF interference in the environment. So optical fiber is known for immunity to EMI.

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