How does coaxial cable compare to twisted-pair conductors?

Coaxial cable provides better protection against electromagnetic interference (EMI) compared to twisted-pair conductors because of its design. A coaxial cable consists of a central conductor surrounded by an insulating layer, a metallic shield, and an outer insulating layer. The shielding serves to block external electromagnetic signals, thereby protecting the inner conductor from interference.

In contrast, twisted-pair conductors, which consist of pairs of wires twisted together, are more susceptible to EMI because they lack the comprehensive shielding that coaxial cables offer. Although twisted pairs can reduce crosstalk between adjacent wires, they do not provide the same level of protection from external electromagnetic fields as coaxial cables.

This superior shielding and protection make coaxial cables particularly suited for transmitting data over longer distances without degradation, especially in environments where EMI is prevalent, such as industrial settings or areas with heavy electronic equipment. Thus, the correct answer highlights the advantage of coaxial cable in maintaining signal integrity in the presence of potential interference.