单项选择题
A. using built-in on-board VPN acceleration to reduce the amount of VPN configuration tasks
B. using the USB port to perform fast Cisco lOS image upgrade
C. using the security audit feature to implement inline Intrusion Prevention System
D. using the SDM configuration tool to reduce training costs
E. using the high performance AIM to increase the Cisco lOS Firewall performance
单项选择题 WhichCiscosecuritytoolcanbestdetermineitaCiscoISRrouterisproperlysecured？（）
单项选择题 CiscoASDMprovides16differentgraphsthehelpidentifysecurityrisksbydisplayingdataaboutpotentiallymaliciousactivity.Whatisonekindofdatathesegraphsshow？（）
单项选择题 A company wants to connect two new offices to their main office.One building is 2 miles away from the headquarters and the other is 12 miles away. The angle between the buildings is 80 degrees. Which antenna is the best to use in this situation？ （）