200-150 · Question #153
What is the maximum working distance of a 1000BASE-ZX SFP transceiver when using ordinary single mode fiber?
The correct answer is C. up to 70 kilometers. The 1000BASE-ZX SFP transceiver operates at 1550 nm wavelength and is rated for distances up to 70 kilometers over standard single-mode fiber.
Question
What is the maximum working distance of a 1000BASE-ZX SFP transceiver when using ordinary single mode fiber?
Options
- Aup to 10 kilometers
- Bup to 4 kilometers
- Cup to 70 kilometers
- Dup to 550 kilometers
How the community answered
(27 responses)- A4% (1)
- C93% (25)
- D4% (1)
Why each option
The 1000BASE-ZX SFP transceiver operates at 1550 nm wavelength and is rated for distances up to 70 kilometers over standard single-mode fiber.
10 kilometers is the maximum distance for 1000BASE-LX transceivers on single-mode fiber, not the ZX variant.
4 kilometers does not correspond to any standard 1000BASE Gigabit Ethernet transceiver specification.
1000BASE-ZX uses a 1550 nm laser optimized for long-haul transmission, achieving up to 70 km over standard (G.652) single-mode fiber under typical conditions.
550 meters is the maximum distance for 1000BASE-SX transceivers using multimode fiber, which is far shorter than the ZX specification.
Concept tested: 1000BASE-ZX SFP transceiver maximum reach
Source: https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/gigabit-ethernet-gbic-sfp-modules/product_data_sheet09186a00801a826b.html
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