单项选择题
A. IOS IPS
B. Autosecure
C. CSA
D. Netflow
E. IOS Network Foundation Protection （NFP）
F. IOS Firewall
单项选择题 WhenimplementingbestpracticesforIPSourceAddressSpoofingandDefeatingDenialofServiceAttackswithIPSourceAddressSpoofing，whatRFCiscommonlyusedtoprotectyournetwork？（）
单项选择题 WhenimplementinginternetstandardsyouarerequiredtofollowRFC’sprocessesandproceduresbasedonwhatRFC？（）
单项选择题 SinceHTTPisoneofthemostcommonprotocolsusedintheinternet，whatshouldbedoneatafirewallleveltoensurethattheprotocolisbeingused correctly？（）