A network technician must pull a new 150-meter cable through an underground conduit to link two switches in separate buildings. The connection must carry 10-gigabit Ethernet, resist electromagnetic interference from nearby backup generators, and keep cost as low as practicable. Which cable type would be the MOST appropriate choice?
Multimode fiber (OM3) with LC connectors
Shielded Cat 6a twisted-pair cable rated for direct burial
Multimode fiber (OM3) easily supports 10 Gbps Ethernet at distances up to 300 m, is immune to EMI, and is less expensive than single-mode fiber for short runs. Shielded Cat 6a still suffers from distance limits of 100 m and potential lightning problems in outdoor conduits. Single-mode fiber meets the technical requirements but is unnecessarily costly for only 150 m. RG-6 coaxial cannot support 10 Gbps Ethernet at all.
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What is the difference between multimode and single-mode fiber?
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Why is electromagnetic interference (EMI) not an issue for fiber optic cables?
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What are LC connectors, and why are they commonly used with fiber optic cables?