Cisco Certified Network Associate (CCNA) Practice Exam 2025 - Free CCNA Practice Questions and Study Guide

The command used to change EIGRP K values in configuration mode is the command that specifically allows the administrator to adjust the K values that EIGRP uses for metric calculations. In Enhanced Interior Gateway Routing Protocol (EIGRP), K values are used to determine the composite metric which influences route selection. The K values represent different factors in the metric calculation: throughput, delay, reliability, load, and MTU.

When configuring EIGRP, to modify these K values, the command must be issued in router configuration mode, targeting the EIGRP process. The appropriate command correctly formats the weights according to EIGRP's requirements, allowing the network administrator to set how much each factor influences the metric.

The other options presented do not reflect valid commands for modifying EIGRP K values or are wrongly formatted commands that do not exist in Cisco's command architecture for EIGRP. Understanding the correct command structure is essential for effective EIGRP configuration and ensuring optimal routing decisions based on the customized metrics.