单项选择题
A.Broadband service
B.Headend VPN device
C.VPN access device
D.Tunnel
单项选择题 Refer to the exhibit. You are the network security administrator responsible for router security.Your networkuses internal IP addressing according to RFC 1918 specifications.From the default rules shown，whichaccess control list would prevent IP address spoofing of these internal networks？（）
单项选择题 HowdoyoudefinetheauthenticationmethodthatwillbeusedwithAAA？（）
单项选择题 Whichnameisofthee-mailtrafficmonitoringservicethatunderliesthatarchitectureofIronPort？（）