Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 148

Which EIGRP packet statement is true?

Answer options

• A. On high-speed links, hello packets are broadcast every 5 seconds for neighbor discovery.
• B. On low-speed links, hello packets are broadcast every 15 seconds for neighbor discovery.
• C. Reply packets are multicast to IP address 224.0.0.10 using RTP.
• D. Update packets route reliable change information only to the affected routers.

Correct answer:

Explanation

Option C is correct because EIGRP reply packets are indeed multicast to the IP address 224.0.0.10 using the Reliable Transport Protocol (RTP). Options A and B incorrectly specify the timing of hello packets on high-speed and low-speed links, which should be 5 seconds and 60 seconds respectively. Option D is incorrect as update packets are sent to all neighbors, not just to the affected routers.