Fiber Count: 1–12 cores, with 2–4 cores most common for residential installations. Q1: In case of the FTTH drop cable, what would be the various cores of fiber available? A1: Frequent arrangements in which are 1, 2, or 4 cores. Single configurations, for example, 6, 8 core is also an alternative for certain cases. Q2: What type of fiber is used: single-mode or multi-mode? What. Fiber cores are the heart of fiber optic cables, transmitting light signals that carry data. Single-mode: A. This guide walks you through the simple decision steps engineers use, the common strand counts on the market, and clear rules-of-thumb for different project types so you choose a cable that fits both today's needs and tomorrow's growth. GJYXCH Indoor/Outdoor Drop Cable Self-supporting.