Which version of DOCSIS allows for download speeds of up to 10 Gbps?

DOCSIS 4.0 is the correct answer because it represents the latest standard in the Data Over Cable Service Interface Specification, significantly increasing the maximum download speeds achievable over cable networks. Specifically, DOCSIS 4.0 can support download speeds of up to 10 Gbps and upload speeds of up to 6 Gbps. This improvement is primarily due to enhancements in both upstream and downstream technologies, which enable more efficient use of available bandwidth and support for new applications demanding higher speeds.

In contrast, the earlier versions such as DOCSIS 1.1, 2.0, and 3.0 have lower maximum speeds, with DOCSIS 3.0 being limited to around 1 Gbps under optimal conditions, and the earlier versions significantly less than that. Therefore, DOCSIS 4.0 is specifically designed to meet the increasing bandwidth needs of modern internet usage and future-proof cable networks.