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  • Andrew Kornrumpf thinks this is interesting:

A technician needs to run a network cable to a remote building, which is approximately 15 kilometers from his base station. He’s not sure if any cable will span that distance. What is the maximum distance of SMF cable?

From

Cover of CompTIA A+ Practice Tests

Note

The fiber optic cable type is not specific enough. Fast eth 100BASE-FX = 200m | 1 G Ethernet 1000BASE-SX = 5000m... etc