单项选择题

A.core layerB.Internet boundaryC.aggregation layerD.agg……

In base e-Commerce module designs， where should firewall perimeters be placed？（）

A.core layer
B.Internet boundary
C.aggregation layer
D.aggregation and core layers
E.access and aggregation layers

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热门试题

多项选择题WhichtwoofthesearecharacteristicsofanIDSsensor？（）

A.passively listens to network traffic
B.is an active device in the traffic path
C.has a permissive interface that is used to monitor networks
D.traffic arrives on one IDS interface and exits on another
E.has a promiscuous interface that is used to monitor the network

多项选择题Users of a site-to-site VPN are reporting performance problems. The VPN connection employs IPSec and GRE and traverses several Ethernet segments. The VPN packets are being fragmented as they traverse the links. What would be two methods to overcome this problem?（）

A. Employ path MTU discovery.
B. Set the MTU higher than 1500 bytes.
C. Turn off pre-fragmentation for IPSec.
D. Set the MTU value to 1400 bytes.