单项选择题
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 al ong 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.
单项选择题 Refer to the exhibit. R1 accesses the Internet using E0/0. You have been asked to co nfigure R1 so that a default route is generated to its downstream devices (191.0.0.1 and 192.0.0.1). Which commands would create this configuration? （）
多项选择题 Refer to the exhibit. You want to use all the routes in the EIGRP topology for IP load balancing. Which two EIGRP subcommands wou ld you use to accomplish this goal?（）
单项选择题 Under which circumstance will a branch ISR router contain interface vlan configurations?（）
