Which physical characteristic helps balanced signaling in cables?

Balanced signaling in cables relies on specific physical characteristics to minimize interference and maintain signal integrity. A symmetrical wiring arrangement is key because it allows for the cancellation of electromagnetic interference from external sources. In balanced signaling, two conductors carry equal and opposite signals; this symmetry means that any noise induced along the length of the cables affects both conductors equally, ultimately canceling out at the receiving end. This arrangement enhances the performance of the cable by improving the overall signal-to-noise ratio.

The other options, such as shorter cable lengths or single-ended connections, do not inherently provide the same benefits to balanced signaling. Shorter cable lengths may reduce the potential for interference but do not address the fundamental concept of balanced signaling. Single-ended connections do not offer the same noise cancellation benefits as a balanced system, which relies on the differential nature of how signals are transmitted. Non-shielded twisted pairs can reduce interference due to their twisted nature, but they are not as effective without the symmetrical arrangement that characterizes balanced cabling.