Prior to 802.1w， Cisco implemented a number of proprietary enhancements to 802.1D to improve convergence in a Layer 2 network. Which statement is correct？（） ["Only UplinkFast and BackboneFast are specified in 802.1w； PortFast must be manually configured.","Only PortFast is specified in 802.1w； UplinkFast and BackboneFast must be manually configured.","None of the proprietary Cisco enhancements are specified in 802.1w.","PortFast， UplinkFast， and BackboneFast are specified in 802.1w."]
在李斯特本国幼稚产业保护论的政策主张有（）。 ["保护的目的","保护的对象","关税保护国内工业","不同工业保护程度不同","追求贸易顺差"]
What is one reason you might recommend a solution using only autonomous access points to a customer？ （） [" The customer requires Layer 3 roaming."," The customer requires immediate wire line integration with a catalyst 6500 switch."," The customer needs an outdoor-ready access point."," The customer wants the option to migrate to LWAPP."]
动态相关性
以下不属于生命周期法特点的是（） ["强调区分工作阶段","强调面向用户","强调尽早开始编程","强调文档管理"]
凝汽器的中间支持答板有什么作甩？
