Cisco Certified Network Associate (CCNA) Practice Exam

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Prepare for the Cisco Certified Network Associate (CCNA) Practice Exam. Test your knowledge with our interactive quizzes featuring multiple choice questions, hints, and explanations. Equip yourself for success!

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What is the multicast address used for EIGRP hello packets?

224.0.0.9
224.0.0.10
239.255.0.1
239.255.255.255

The correct answer is: 224.0.0.10

The correct multicast address used for EIGRP (Enhanced Interior Gateway Routing Protocol) hello packets is 224.0.0.10. This address is designated for routing protocols and is specifically utilized for EIGRP to communicate hello packets to all EIGRP routers on a local network segment. The hello packets are essential for establishing and maintaining neighbor relationships among EIGRP routers, allowing them to exchange routing information. The specific use of multicast addresses in EIGRP optimizes network traffic by allowing a single packet to be sent to multiple receivers, rather than needing to send individual packets to each router, which helps in conserving bandwidth and improving efficiency.