Answer: Data Over Cable Service Interface Specification (DOCSIS)
Explanation: The standards for cable broadband are defined by a number of specifications, which are collectively known as the Data Over Cable Service Interface Specification (DOCSIS). DOCSIS is a set of international standards that govern the transmission of data over cable television systems.
The current version of DOCSIS is DOCSIS 4.0, which was released in March 2020. DOCSIS 4.0 is designed to support data speeds of up to 10 Gbps downstream and 6 Gbps upstream, as well as improved network efficiency and reduced latency.
Some of the key specifications that are included in DOCSIS standards include:
Physical Layer (PHY) specifications - These define the characteristics of the cable network, including the frequency ranges used for upstream and downstream transmissions, as well as modulation schemes and error correction techniques.
Media Access Control (MAC) specifications - These define how data is transmitted over the cable network, including how different devices share the network bandwidth and how packets are prioritized and managed.
Quality of Service (QoS) specifications - These define how different types of traffic are treated on the cable network, including how voice, video, and data traffic are prioritized to ensure high-quality service.
Security specifications - These define how data is secured on the cable network, including encryption and authentication mechanisms to prevent unauthorized access and protect user privacy.
Overall, DOCSIS standards provide a comprehensive framework for the design and operation of cable broadband networks, and ensure that different vendors and equipment are interoperable and compatible with each other.