Final answer:
The gateways that make up the Internet backbone are called core gateways. Core gateways are responsible for routing traffic between different networks and ensuring that data reaches its intended destination. These gateways are typically operated by large internet service providers (ISPs).
Step-by-step explanation:
The gateways that make up the Internet backbone are called core gateways. These gateways are responsible for routing traffic between different networks and ensuring that data reaches its intended destination. Core gateways are typically operated by large internet service providers (ISPs) and have high-speed connections that can handle large amounts of data.
For example, in the United States, some of the major ISPs that operate core gateways include AT&T, Comcast, and Verizon. These ISPs have a network of core gateways spread out across the country, interconnected to form the Internet backbone.