200-301 Question #838: Real Exam Question with Answer & Explanation

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Submitted by certguy· Mar 5, 2026Network Fundamentals

Question

What is the difference between 1000BASE-LX/LH and 1000BASE-ZX interfaces?

Options

A1000BASE-ZX is supported on links up to 1000km, and 1000BASE-LX/LH operates over links up
B1000BASE-LX/LH interoperates with multimode and single-mode fiber, and 10008ASE-ZX needs
C1000BASE-LX/LH is supported on links up to 10km, and 1000BASE-ZX operates over links up to
D1000BASE-ZX interoperates with dual-rate 100M/1G 10Km SFP over multimode fiber, and

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Topics

#1000BASE-LX/LH#1000BASE-ZX#Gigabit Ethernet#Fiber optic media

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