Which of the following routing protocols is used to exchange route information between public autonomous systems? A)OSPF. B)BGP. C)EIGRP. D)RIP.
The correct answer is B) BGP (Border Gateway Protocol).
BGP is typically used as the routing protocol between autonomous systems on the Internet. It allows different autonomous systems (ASes) to exchange routing information and determine the best path for forwarding traffic. BGP uses a path vector algorithm to make routing decisions based on various factors such as the number of AS hops, network policy, and path attributes.
OSPF (Open Shortest Path First) is an interior gateway protocol (IGP) commonly used within a single autonomous system. It is used to exchange route information between routers within the same organization or network.
EIGRP (Enhanced Interior Gateway Routing Protocol) is another IGP used within a single autonomous system, primarily in Cisco networks. It is a distance-vector protocol that calculates the best path based on bandwidth, delay, reliability, and other factors.
RIP (Routing Information Protocol) is also a distance-vector routing protocol, but it is considered an outdated protocol and has limited scalability. It is typically used in small networks and does not scale well for larger networks.
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