Which transmit link is listed alongside SATCOM and LOS?

• A. Fiber optic
• B. PIER CONNECTIVITY
• C. Microwave relay
• D. Cellular link

Answer: (B)

In naval communications, transmit links describe the paths signals take between nodes. SATCOM uses satellites, LOS covers line-of-sight wireless links, and a pier connectivity option provides a shore-to-ship path via cables and infrastructure at a pier when a vessel is moored. This third option is listed alongside SATCOM and LOS because it represents the shore-based link category that connects the ship to the inland network, complementing space-based and wireless links.

Other choices describe specific transmission media (fiber optic, microwave relay) or less typical paths (cellular) and aren’t the labeled type of transmit link used in this triad. Pier connectivity is the established term for the shore connection alongside SATCOM and LOS.