What solution should be used for terminating a leased fiber link at a demarcation point?

The appropriate solution for terminating a leased fiber link at a demarcation point is Ethernet. This technology is specifically designed to handle high-speed data transmission over local area networks and can efficiently utilize the bandwidth provided by fiber-optic connections. When a leased fiber link is established, the demarcation point functions as the boundary between the service provider's network and the customer's local network. Ethernet is widely used because it is flexible, scalable, and compatible with a variety of networking equipment, making it suitable for enterprise environments.

In contexts where leased fiber is involved, Ethernet over fiber (also known as Optical Ethernet) allows organizations to connect to the service provider's fiber infrastructure and then distribute that connectivity within their own networks. The ability to provide high throughput and support for various network topologies makes Ethernet the preferred choice for terminating these types of leased connections.

Other technologies mentioned, like DSL and cable modems, are typically used for broadband access over copper lines or coaxial cables and are not designed for the high bandwidth capabilities of fiber. FTTP, which stands for Fiber to the Premises, pertains to the overall connection to the end-user but does not specifically address the method of terminating of the fiber link at a demarcation point. Therefore, Ethernet is the correct