Which organization is commonly associated with North American cabling standards, alongside IEEE?

• A. IEEE
• B. EIA/TIA
• C. ITU-T
• D. ISO/IEC

Answer: (B)

North American cabling standards are defined by EIA/TIA, the Telecommunications Industry Association. They publish ANSI/TIA standards that cover structured cabling—what cables to use, how connectors and patch panels fit together, routing and spaces, and the category ratings (like Cat5e, Cat6). These guidelines specify the physical medium that networks rely on, ensuring reliable, interoperable connections for Ethernet and other services. IEEE handles the actual network protocols and transmission rules, but the physical cabling requirements in North America come from EIA/TIA standards. The other organizations don’t focus on North American cabling guidelines: ITU-T is more about global telecom signaling and protocols, ISO/IEC covers broad international standardization, and IEEE is the other major standards body in networking but not the primary source of North American cabling specifications.