Final answer:
VDSL is the DSL technology that offers the highest data rates, reaching up to 100 Mbps or more, but the actual speeds may vary depending on line quality and distance from the distribution point.
Step-by-step explanation:
The DSL technology that provides the highest data rate is VDSL (Very-high-bit-rate Digital Subscriber Line). VDSL offers significantly higher data rates compared to other DSL technologies, such as ADSL, HDSL, and SDSL, because it is designed for short distances and to support multimedia and high-bandwidth applications.
With VDSL, upload and download speeds can reach up to 100 Mbps within a range of about 1.2 km (0.75 miles), with the newest versions, VDSL2, potentially reaching up to 250 Mbps under ideal conditions. However, the actual speeds can vary greatly based on the quality of the lines and the distance from the provider's central office or distribution point.