Final answer:
The correct answer is options 1) The sum of the segment delays and 3) The lowest segment bandwidth. The correct answer to the calculation of EIGRP metric weights are the sum of the segment delays and the lowest segment bandwidth.
Step-by-step explanation:
Enhanced Interior Gateway Routing Protocol (EIGRP) uses these two factors to compute its composite metric. EIGRP takes the slowest bandwidth (in kilobits per second) along the path from source to destination to ensure that the entire path can support the capacity of the slowest link. Additionally, it computes the total delay (in tens of microseconds) encountered across the path by summing the individual segment delays. These values get plugged into a formula where they can be weighted to influence their effect on the metric calculation. This composite metric is used by EIGRP to select the best path to a destination network.
Understanding the metric calculation is important for network professionals to optimize routing and troubleshoot network performance issues. The choice of weights for bandwidth and delay can significantly alter the routing decisions made by EIGRP. Bandwidth is generally given more weight than delay but both are crucial to determining the most efficient route.