3.2 Determine How a Router Makes a Forwarding Decision by Default 200-301 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A router has two OSPF routes to 192.168.10.0/24: one via a GigabitEthernet interface with a cost of 1, and another via a Serial interface with a cost of 10. A packet destined for 192.168.10.1 arrives. Which route will the router use?

   • AThe GigabitEthernet route, because it has a lower cost.
   • BThe Serial route, because it has a higher cost and is more reliable.
   • CThe Serial route, because it has a lower administrative distance.
   • DBoth routes, because they are equal-cost paths.
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   A router learns a route to 172.16.0.0/16 from both OSPF and EIGRP. By default, which route will the router install in its routing table?

   • ABoth routes are installed and load-balanced.
   • BThe EIGRP route, because EIGRP has a lower administrative distance than OSPF.
   • CThe route with the lower metric, regardless of protocol.
   • DThe OSPF route, because OSPF has a lower administrative distance than EIGRP.
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A router has two OSPF routes to 192.168.1.0/24: one via a 10 Mbps interface with cost 10, and another via a 100 Mbps interface with cost 1. A packet destined for 192.168.1.1 arrives. Which route will the router use?

   • AThe 100 Mbps route, because it has a lower cost.
   • BThe 10 Mbps route, because it has a lower administrative distance.
   • CBoth routes, because they are equal-cost paths.
   • DThe 10 Mbps route, because it has a higher cost and is more reliable.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A router has the following routes in its table: 10.0.0.0/8, 10.1.0.0/16, and 10.1.1.0/24. A packet arrives destined for 10.1.1.55. Which route will the router use to forward the packet?

   • A10.0.0.0/8, because it is the most general route
   • B10.1.0.0/16, because it is a middle-length prefix
   • C10.1.1.0/24, because it has the longest prefix match
   • DAll three routes are used in a round-robin fashion
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A router has the following routes in its routing table: 172.16.0.0/16 via OSPF cost 10, 172.16.1.0/24 via OSPF cost 20, and 172.16.1.128/25 via OSPF cost 30. A packet destined for 172.16.1.200 arrives. Which route will the router use?

   • A172.16.0.0/16, because it has the lowest cost.
   • BThe router will load-balance across all three routes.
   • C172.16.1.0/24, because it has a lower cost than the /25 route.
   • D172.16.1.128/25, because it is the longest prefix match.
   Reveal Solution Discussion Select an answer first