单项选择题
A. Update packets route reliable change information only to the affected routers.
B. Reply packets are multicast to IP address 224.0.0.10 using RTP.
C. On high - speed links, hello packets are broadcast every 5 seconds for neighbor discovery.
D. Reply packets are used to send routing updates.
E. On low - speed links, hello packets are broa dcast every 15 seconds for neighbor discovery.
单项选择题 Refer to the exhibit. EIGRP has been configured on routers R1 and R2. However, R1 does not show R2 as a neighbor and does not accept routing updates from R2. What could be the cause of the problem?（）
多项选择题 Refer to the exhibit. EIGRP is configured with the default configuration on all routers. Auto summariz ation is enabled on routers R2 and R3, but it is disabled on router R1. Which two EIGRP routes will be seen in the routing table of router R3?（）
多项选择题 Based on the exhibited output, which three statements are true?（）