Network Defense Essentials (NDE) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 545

Which type of cable features a single copper conductor at its center, insulated by a plastic layer and a braided metal shield?

Shielded twisted pair

Coaxial

The choice of coaxial cable is appropriate because it specifically describes a structure where a single copper conductor is located at the center, surrounded by insulation, and then shielded by a braided metal layer. This design is essential for preventing electromagnetic interference, which is particularly beneficial in networking and transmission applications. The combination of the central conductor and the braided shield allows coaxial cables to effectively transmit data while minimizing signal loss and susceptibility to external noise.

In contrast, shielded and unshielded twisted pair cables consist of multiple pairs of wires that are twisted together but lack the central conductor and the braided shield characteristic of coaxial design. Fiber optic cables, on the other hand, use glass or plastic fibers for data transmission and do not involve metal conductors in their structure, which further distinguishes them from coaxial cables.

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Fiber optic

Unshielded twisted pair

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