You must place CAT6 cable above a factory floor with automated welding machines and hammer forges. Of the following, what type of shielding would be most effective?

Multi-layer braid shielding provides only 85-95% optical coverage and cannot fully attenuate the strong EMI fields produced by industrial welding and forging equipment.

Combined foil and braid shielding improves coverage over braid alone but the cable jacket still lacks the continuous metal wall needed to block high-intensity industrial EMI sources.

Solid metallic conduit (rigid metal conduit) forms a continuous, unbroken metal enclosure around the cable, functioning as a Faraday cage that blocks the intense electromagnetic fields generated by welding arcs and hammer forges. Unlike foil/braid cable shields or flexible conduit, rigid metallic conduit has no gaps or seams in its walls, providing maximum EMI attenuation alongside superior mechanical protection.

Flexible metallic conduit uses interlocking metal strips that create inherent seams and gaps along its length, allowing EMI penetration and making it far less effective than solid rigid conduit.

Schedule 40 PVC conduit is non-conductive plastic and provides absolutely no electromagnetic shielding, offering only mechanical protection for the cable.