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Question 433 of 1,420
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350-401 Practice Question: Drag and drop the steps of EIGRP authentication…
Drag and drop the steps of EIGRP authentication using MD5 key-chain into the correct order, from first to last.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
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Create a key chain using key chain command
The correct order for configuring EIGRP MD5 authentication with a key chain is: first, create a key chain using the 'key chain' command. Next, configure a key number and key-string under the key chain. Then, enter interface configuration mode for the interface on which EIGRP is enabled. After that, issue the command 'ip authentication mode eigrp md5' to set the authentication mode. Finally, issue the command 'ip authentication key-chain eigrp <name>' to apply the key chain to the interface.
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
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Last reviewed: Jun 18, 2026
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