Cisco Certified Network Associate (CCNA) Practice Exam

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Study for the Cisco Certified Network Associate (CCNA) exam with our comprehensive quiz featuring multiple-choice questions and detailed explanations. Prepare effectively and enhance your understanding of networking concepts!

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What is the administrative distance for EIGRP?

The correct answer is: 90

The administrative distance (AD) for Enhanced Interior Gateway Routing Protocol (EIGRP) is 90. This value is crucial as it indicates the trustworthiness of the routing information received from different routing protocols. The lower the administrative distance, the more preferred that route is over others. In the context of various routing protocols, EIGRP's AD of 90 makes it more reliable than other protocols, such as OSPF, which has an AD of 110, and RIP, which stands at 120. This trustworthiness can significantly influence a router's decision-making process regarding which routing information to use when multiple routes exist to the same destination. Understanding administrative distance is essential for configuring and troubleshooting routing protocols within a network, as it directly affects how routes are prioritized and selected.