Direct buried coax is described as which type of coax?

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

The idea being tested is how coaxial cables are categorized by rigidity and their suitability for direct burial. Direct buried coax is described as semi-rigid hardline because this type is built to be buried in the ground without conduit while still maintaining enough stiffness to resist bending, crushing, and environmental stresses. Semi-rigid hardline offers better mechanical protection and lower loss for long outdoor runs, which is why it’s used for direct burial applications.

Twisted pair is a different medium altogether and isn’t coaxial; it’s used for lower-bandwidth paths and requires different protection. Fiber optic carries light instead of electrical signals, so it isn’t coaxial. Softline is flexible coax used where easier handling and routing are needed, often with conduit or above-ground installations; it isn’t typically rated for direct burial without protective measures.