单选题A service provider wants to prevent the repeat of a denial of service (DoS) attack that recently disabled Internet access for several thousand customers. Which Cisco solution best matches this business need?（）A Network securityB Wireless networkC Conte
题目
单选题
A service provider wants to prevent the repeat of a denial of service (DoS) attack that recently disabled Internet access for several thousand customers. Which Cisco solution best matches this business need?（）
A
Network security
B
Wireless network
C
Content networking
D
Virtual Private Network (VPN)