Broadband standards – expansion of DOCSIS In cable broadband technology, the acronym DOCSIS refers to a family of specifications that define how data is carried over cable TV networks. What does DOCSIS stand for?

Introduction / Context:
DOCSIS is the foundation for cable internet services offered via hybrid fiber-coax networks. Understanding the correct expansion helps you interpret modem labels (DOCSIS 3.0, 3.1, 4.0) and relate them to speed, channel bonding, and latency improvements.

Given Data / Assumptions:

• We are focusing on the official long form of DOCSIS.
• It is a technical specification maintained by industry bodies.
• Incorrect choices include words not used in the title (for example, “Internet”, “Secure”).

Concept / Approach:
DOCSIS expands to Data Over Cable Service Interface Specification. It standardizes how cable modems and CMTS equipment communicate, including physical layer modulation schemes (such as QAM and OFDM), channel bonding, and management protocols.

Step-by-Step Solution:
Identify the option that contains the exact words “Service Interface Specification”.Confirm that it aligns with how equipment is certified and marketed.Select the fully correct expansion.

Verification / Alternative check:
Documentation for cable modems and operator networks consistently references DOCSIS as Data Over Cable Service Interface Specification.

Why Other Options Are Wrong:

• Security/Internet/International variants: not part of the official name.

Common Pitfalls:
Mixing DOCSIS with broader internet protocols. DOCSIS governs access over coax; IP runs over DOCSIS to provide internet connectivity.

Final Answer:
Data Over Cable Service Interface Specification