Consistency checks and compatibility checks are performed before a Virtual PortChannel （vPC） is created. During a compatibility check， one vPC peer conveys configuration information to the other vPC peer in order to verify that vPC member ports can actually form a PortChannel. Which statements about a "Virtual PortChannel graceful consistent check" are true？（） Graceful consistency check is enabled by default.。 When graceful consistency check is enabled， only the links on the secondary peer device are suspended.。 Graceful consistency check is disabled by default， so to enable this feature， use graceful consistency-check command under VPC domain configuration mode.。 When graceful consistency check is enabled， only the inconsistent VLANs on the secondary peer device are suspended.。
简述勘探的几个阶段。
思想教育方法是顺利完成班级管理任务的重要途径。
Which attribute is used to pass the user role back to the Nexus when remote AAA is enabled？（） Cisco AV-pair。 TACACS+ or RADIUS ack frame role attribute。 DH-CHAP challenge attribute。 privilege level attribute。
以下属于原创性设计形态的有（） 李斯的小篆。 蔡伦的造纸。 诸葛亮的木牛流马。 贝聿铭的卢浮宫扩建工程。 毕昇的活字印刷。
Which of these is the best way to provide sender non-repudiation？（）
