Correct Answer. B. Shielding Although typical UTP cables are unshielded, newer variants and higher categories like Category 6A or Category 7 include additional shielding to protect against EMI, such as that from fluorescent lighting. Ensuring that the UTP cables have adequate shielding is important in environments where they are exposed to potential interference sources.
Option A is incorrect because waterproof coating protects against moisture but does not prevent electromagnetic interference.
Option C is incorrect because bend radius affects the physical integrity of the cable but not its susceptibility to electromagnetic interference.
Option D is incorrect because while good insulation quality is important, it primarily protects the wires inside from physical damage rather than from EMI.