Question

What is a routing protocol that is used for moving prefixes back and forth between different autonomous systems?

A) OSPF (Open Shortest Path First)
B) BGP (Border Gateway Protocol)
C) RIP (Routing Information Protocol)
D) EIGRP (Enhanced Interior Gateway Routing Protocol)

Answer 1

The routing protocol that moves prefixes between autonomous systems is BGP (Border Gateway Protocol), an exterior gateway protocol unlike OSPF, RIP, or EIGRP.

Step-by-step explanation:

The routing protocol used for moving prefixes back and forth between different autonomous systems is B) BGP (Border Gateway Protocol). Unlike interior gateway protocols like OSPF, RIP, and EIGRP, which are used within a single autonomous system, BGP is used for internet routing and exchanges routing and reachability information between autonomous systems, making it an exterior gateway protocol.