单项选择题
A. device-level warranty
B. Cisco Small Business Pro products only
C. speed of hardware replacement
D. access to Cisco Small Business Support Community
单项选择题 WhichprogramhousesalltheSMBpartnertrainingresources？（）
多项选择题 CiscoSmallBusinessSwitchesarespecificallyengineeredforthesmallbusinesscustomer.WhataretwocharacteristicscommontoCiscoSmallBusinessSwitches？（）
单项选择题 Layer3（thenetworklayer）providesconnectivityandpathselectionbetweentwohostsystemsthatmaybelocatedongeographicallyseparatednetworks.Whichtwodevicesoperateatthenetworklayer？（）