單項選擇題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.Virtual Private Network (VPN)
C.Wireless network
D.Content networking


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3.單項選擇題Which type of deployment utilizes ISRs with Cisco IOS Security feature sets to provide an ideal, low-cost, yet capable and powerful platform?()

A.Financial deployments
B.Medium deployments
C.Large deployments
D.Commercial deployments
E.Small deployments

4.單項選擇題In the 7-layer OSI model, which layer switching will take place?()

A.Layer two
B.Layer four
C.Layer one
D.Layer three

5.單項選擇題In which area of the campus LAN are the user computers attached to the network?()

A.core
B.access
C.distribution
D.aggregation