单项选择题
A. Configure BGP n eighbor relationships between all interfaces on R1 and R4.
B. Install a direct connection between R1 and R4.
C. Configure loopback interfaces on R1 and R4 to provide the update source address for BGP packets.
D. Configure only one neighbor relationship between R1's 192.168.1.2 interface and R4's 172.16.10.2 interface.
单项选择题 When implementing OSPFv3, which statement describes the configuration of OSPF areas?（）
多项选择题 The IP multicast global configuration command ip pirn send - rp - announce IoopbackO scope 31 group - list 5 issued on multicast router RTA. What are the two results? （）
单项选择题 Route redistribution (RR) has become an integral part of IP network design as the res ult of a growing need for disseminating certain routes across routing protocol boundaries. By default, which description is true when redistributing routes from other routing protocols into OSPF?（）
