What is the maximum distance that the 40GBASE-LR4 Ethernet standard can span? 01/29/2021 – by Mod_GuideK 0 What is the maximum distance that the 40GBASE-LR4 Ethernet standard can span? A. 550 m B. 10 km C. 40 km D. 80 km SHOW ANSWERSCorrect Answer: B Explanation/Reference: