85. A network administrator is setting up two new firewalls for redundancy and needs to implement a redundant internet connection. Which of the following routing technologies will the administrator most likely use?
Answer: D
BGP is the most likely routing technology for redundant internet connections.
Border Gateway Protocol (BGP) is designed for routing between different autonomous systems on the internet, making it the best choice for establishing redundant internet connections.
A) EIGRP
Enhanced Interior Gateway Routing Protocol (EIGRP) is a Cisco proprietary routing protocol primarily used within an autonomous system. While it is efficient for internal routing, it does not support redundancy for internet connections across multiple ISPs as effectively as BGP.
B) RIPv2
Routing Information Protocol version 2 (RIPv2) is a distance-vector routing protocol that is generally used in smaller networks. Its limitations in scalability and convergence time make it unsuitable for managing redundant internet connections, particularly when compared to BGP.
C) OSPF
Open Shortest Path First (OSPF) is a link-state routing protocol that works well within an autonomous system. However, like EIGRP, it is not typically used for routing between different ISPs or handling redundancy for internet connections, which is where BGP excels.
D) BGP
Border Gateway Protocol (BGP) is specifically designed for managing how packets are routed across the internet through various autonomous systems. It provides the necessary features for establishing redundancy and load balancing between multiple internet connections.
Conclusion
BGP stands out as the ideal routing technology for implementing redundant internet connections due to its ability to handle multiple paths between different networks. In contrast, EIGRP, RIPv2, and OSPF are more suited for internal routing and lack the robustness required for managing redundancy across different ISPs. Thus, BGP is the definitive choice for this scenario.