200-301: Cisco Certified Network AssociateDemo

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QuestionQ1202

IP Connectivity

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Refer to the exhibit. Packets are received by the router from BGP through a serial interface at 209.165.201.1. Each route is already present in the routing table. Which interface will be used to forward traffic destined for IP address 10.1.1.19?

  • A F0/0
  • B F0/1
  • C F0/4
  • D F0/3
Explanation

Routers forward packets by using the most specific matching prefix in the routing table. Although 10.1.1.19 matches the broader routes 10.1.1.0/24 and 10.0.0.0/8, it also matches 10.1.1.16/28, and /28 is the longest prefix. Therefore the packet is sent through interface F0/0.

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