In the EIGRP topology table, which of the following codes indicates that no computations are being performed for that destination?

In the EIGRP (Enhanced Interior Gateway Routing Protocol) topology table, the code that indicates no computations are being performed for a destination is represented by the letter "P," which stands for "Passive."

When a route is marked as Passive, it means that EIGRP has already completed the necessary calculations and the route is stable. This typically occurs when all necessary information is obtained, and the best route has been determined. As a result, the protocol is not actively re-computing or recalculating the path for that destination, allowing the network to function smoothly with minimal resource overhead.

On the other hand, the code for Active routes, marked as "A," indicates that the EIGRP process is actively recalculating the best path due to a topology change or some other triggering event. This means that calculations are being performed, which is the opposite of what occurs for a Passive route. The "D" for Down signifies that there is no valid route available, while "L" for Local indicates a route that is locally connected on the device. Thus, "P" is distinctly associated with the absence of computations for that destination, affirming its validity in this context.