单项选择题
A. 802.11 a
B. 802.11 a/b
C. 802.11 a/b/g/n
D. 802.11 b/g/n
单项选择题 YoumightrecommendaCiscoIntegratedServicesRoutertoabusinesswithwhichcharacteristic？（）
多项选择题 WhataretwowaysinwhichtheCiscoSecurityMonitoring，Analysis，andResponseSystemprovidessuperiornetworkprotection？（）
多项选择题 Healthcareprovidersareincreasinglyusingwirelesstechnologiestoenablegreatermobilityforclinicalstaff.Whichtwowirelessdevicescanbeusedinanintegratedmedical-gradenetwork？（）