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Exam 300-135 Question id=567 Layer 3 Technologies

Refer to the exhibit.
R1#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is to network D [90/160000] via, 00:05:55, Ethernet1/0 is variably subnetted, 4 subnets, 2 masks D is summary, 00:05:55, Null0 C is directly connected, Loopback1 C is directly connected, Loopback2 C is directly connected, Loopback20 is subnetted, 3 subnets C is directly connected, Ethernet1/0 C is directly connected, Ethernet0/0 C is directly connected, Ethernet2/0 D*EX [170/2174976] via, 00:05:55, Ethernet0/0 [170/2174976] via, 00:05:55, Ethernet0/0
How would you confirm on R1 that load balancing is actually occurring on the default-network (

A. Use ping and the show ip route command to confirm the timers for each default network resets to 0.
B. Load balancing does not occur over default networks; the second route will only be used for failover.
C. Use an extended ping along with repeated show ip route commands to confirm the gateway of last resort address toggles back and forth.
D. Use the traceroute command to an address that is not explicitly in the routing table.