Final answer:
Link state protocols were invented to overcome limitations of distance vector protocols by providing faster convergence, preventing routing loops, and giving routers a full view of the network.
Step-by-step explanation:
Distance vector protocols, such as Routing Information Protocol (RIP), have limitations in terms of scalability and network convergence time. Link state protocols, such as Open Shortest Path First (OSPF), were designed to address these limitations by providing more accurate and efficient routing information.
The reason why link state protocols were eventually invented was B) To overcome limitations of distance vector protocols. Distance vector protocols suffer from various issues like slow convergence, routing loops, and the count-to-infinity problem. In contrast, link state protocols such as OSPF and IS-IS were developed to address these issues by providing a faster convergence time, a more reliable and efficient network topology map, and to enable routers to have a complete view of the network to make more informed routing decisions.