avoid Layer 2 loops. Which two of the following are most probably the reasons for that preference?（） [" Information about port roles is sent to all switches."," RSTPs that are based on Cisco products require no additional configuration."," Features such as UplinkFast and BackboneFast are compatible with RSTP."," An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements."]
列宁指出：“俄国当前形势的特点是从革命的第一阶段向革命的第二阶段过渡……”此段材料应出自（）。 ["《告工人、士兵和农民书》","《四月提纲》","《和平法令》","《土地法令》"]
Which of the general policies on the wlan edit page on the wlan controller would be used when configuring a radio for a single antenna for an outdoor application？（） ["802.11b\/g","radio","access point","802.11a"]
系统性风险
Which two functions does Cisco Configuration Assistant provide?（） [" wireless connectivity"," call routing configuration"," device discovery"," call forwarding"," command line configuratio"]
银行产品的特点有无形性、（）、多变性和（）。
