Which of the following is a characteristic of dynamic routing?

Dynamic routing is characterized primarily by its ability to automatically update routing tables based on network changes. Unlike static routing, which requires manual intervention to update routes, dynamic routing protocols enable routers to communicate with one another to share and disseminate routing information. This adaptability allows networks to respond quickly and efficiently to changes in the network topology, such as the addition or removal of devices or the failure of links.

Through the use of various routing protocols, dynamic routers can discover the best paths to different destinations in real-time, leading to optimized network performance and resilience. This characteristic of automatic updates is fundamental for maintaining an efficient and robust routing environment, particularly in large and complex networks where manual configuration would be cumbersome and impractical.

The other options reflect contrasting characteristics that do not align with dynamic routing. Manual configuration of routes pertains to static routing, while fixed routes suggest that there is no variability or adaptation, which is also outside the realm of dynamic routing. Additionally, while administrative distance plays a role in determining the precedence of routing information, it is not an exclusive characteristic of dynamic routing itself.