Which three statements describe user authentication in Cisco DCNM-LAN？ （） 正确。 错误。
Which statement about Software Maintenance Upgrade is true？（） 正确。 错误。
斯坦豪斯认为没有（）的发展就没有教育的发展，而且发展的最好的手段不是通过明晰的目的，而是通过批评实践。 正确。 错误。
Refer to the exhibit. R2 and R3 are routers connected using Ethernet services from a service provider and can receive pings from each other. OSPF is configured as the routing protocol but adjacency is not happening. According to the output of the show commands in the exhibit, what could be the most likely cause of the problem?（） 正确。 错误。
怎样通过减少遭遇和冲突来改善道路交通安全状况？ 正确。 错误。
在个人独资企业中，独资人承担有限责任。（）
