【单选题】
Which protocols does Cisco NSF support? （）
A、IS-IS, EIGRP, SSO, BGP
B、ISSU, OSPF, IS-IS
C、IETF, OSPF, ISSU
D、EIGRP, BGP, OSPF, IS-IS
查看正确答案
A、It does not scale well B、It converges slower than OSPF C、It is a proprietary protocol D、It is a distance vector protocol
