单项选择题
A. The no auto - summary command has not been issued under the EIGRP process on both routers.
B. Interface E0 on router R1 has not been configured with a secondary IP address of 10.1.2.1/24.
C. EIGRP cannot exchange routing updates with a neighbor's router interface that is configured with tw o IP addresses.
D. EIGRP cannot form neighbor relationship and exchange routing updates with a secondary address.
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?（）
多项选择题 What are three key concepts that apply when configuring the EIGRP stub routing feature in a hub and spoke network？（）
