七情
（）是喇叭形形成标志。
When HSRP is configured on a network, which two of these items are provided, which are shared between the routers that run HSRP ?（） (choose two) [" Shared single interface"," IP Address"," TCP-based hello packets"," MAC addre"]
我国《广告法》中关于不得使用国家级。最高级。最佳等用语的规定，属于（） ["限制性条款","行业自律","禁止性条款","职业道德"]
What are three key differences between the Cisco and Cisco Small Business product portfolios?（） [" service and support options"," appeal to expanding businesses"," ease of use"," device management options"," ramp-up time for technology integratio"]
写出完成下列功能的UNIX命令。将当前目录下的文件as.c改名为 as.bak
