An802.11ac wireless bridgeis the most practical solution to connect two nearby buildingswithout trenching or laying physical cable. It provides high-speed, point-to-point connectivity using directional antennas.
* A. Multimode fiberis effective but expensive and typically limited to 500 meters or less.
* C. Cat 6 copperis only rated for up to 100 meters - not viable for a street-wide distance.
* D. Loopback adapteris a troubleshooting tool, not for network extension.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 1.3 - Compare and contrast various network topologies, types, and technologies.