行动研究
Which configuration is used to enable root guard？（） interface gig3/1 spanning-tree guard root。 interface gig3/1 spanning-tree root guard。 interface gig3/1 spanning-tree root-guard。 interface gig3/1 spanning-tree root-guard default。
典型的自学辅导式的教学组织形式，是指（）。 分组教学制。 道尔顿制。 文纳特卡制。 开放课堂。
Refer to the exhibit. The two exhibit devices are the only Cisco devices on the network. The serial network between the two devices has a mask of 255.255.255.252. Given the output that is shown, what three statements are true of these devices? （） The Manchester serial address is 10.1.1.1。 The Manchester serial address is 10.1.1.2。 这个Manchester路由器串口地址为：10.1.12。 The London router is a Cisco 2610.。 The Manchester router is a Cisco 2610.。 The CDP information was received on port Serial0/0 of the Manchester router.。 The CDP information was sent by port Serial0/0 of the London Router.。
家蚕有哪种病被国家列入强制性检疫对象？
NBAR supports all of these with the exception of which one？（）
