This routing protocol is known as the Routing Protocol of the Internet and is used for inter-domain routing.

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Multiple Choice

This routing protocol is known as the Routing Protocol of the Internet and is used for inter-domain routing.

Inter-domain routing—the way packets move between different networks on the Internet—relies on a protocol designed to manage reachability and policies across many autonomous systems. Border Gateway Protocol (BGP) is that protocol. It’s built to scale across the global Internet, exchanging which networks can be reached through which neighbors and applying routing policies that networks define themselves. BGP is a path-vector protocol, meaning it shares the path information that data would take across multiple ASes, using attributes like AS_PATH to prevent loops and to influence route selection. It runs over TCP to ensure reliable, ordered updates, which is essential for the stability of Internet-wide routing. In contrast, other common routing protocols operate primarily inside a single autonomous system and focus on metrics or topology within that domain. That’s why BGP is described as the routing protocol of the Internet for inter-domain routing.

Inter-domain routing—the way packets move between different networks on the Internet—relies on a protocol designed to manage reachability and policies across many autonomous systems. Border Gateway Protocol (BGP) is that protocol. It’s built to scale across the global Internet, exchanging which networks can be reached through which neighbors and applying routing policies that networks define themselves.

BGP is a path-vector protocol, meaning it shares the path information that data would take across multiple ASes, using attributes like AS_PATH to prevent loops and to influence route selection. It runs over TCP to ensure reliable, ordered updates, which is essential for the stability of Internet-wide routing.

In contrast, other common routing protocols operate primarily inside a single autonomous system and focus on metrics or topology within that domain. That’s why BGP is described as the routing protocol of the Internet for inter-domain routing.

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