Which sheath design includes metallic armour?

Study for the BICSI OSP Design Test. Prepare using multiple choice questions, with hints and explanations to enhance understanding. Succeed in your exam journey!

Metallic armour means the sheath includes a metal protective layer as part of the cable design. That metal armor provides mechanical protection against crush, abrasion, and rodent damage, which is why this option specifically describes a sheath with metallic armor. The other terms focus on different characteristics: a self‑supporting design emphasizes installation capability rather than armor; dielectric refers to a non‑metallic, insulating jacket; and armoured self‑support describes a combined feature set without the explicit emphasis on the metallic armor itself. So the design that includes metallic armour is the one labeled as metallic armour.