What is the line speed of a DS0 in North America? 01/29/2021 – by Mod_GuideK 0 What is the line speed of a DS0 in North America? C. 64 kbps D. 128 kbps D. 128 kbps SHOW ANSWERSCorrect Answer: C Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.