单项选择题
Which item is the great majority of software vulnerabilities that have been discovered？（）
A.Stack vulnerabilities B.Heap overflows C.Software overflows D.Buffer overflows
单项选择题 Whichstatementistrueaboutvishing？（）
单项选择题 RefertoCiscoIOSZone-BasedPolicyFirewall，wherewilltheinspectionpolicybeapplied？（）
单项选择题 WhichlocationwillberecommendedforextendedorextendednamedACLs？（）
