多项选择题
A. DAI can be performed on ingress ports only.
B. DAI can be performed on both ingress and egress ports.
C. DAI is supported on access ports， trunk ports， EtherChannel ports， and private VLAN ports.
D. DAI should be enabled on the root switch for particular VLANs only in order to secure the ARP caches of hosts in the domain.
E. DAI should be configured on all access switch ports as untrusted and on all switch ports connected to other switches as trusted.
F. DAI is supported on access and trunk ports only.
单项选择题 pany has implemented 802.1X authentication as a security enhancement. Which statement is true about 802.1x port-based authentication？（）
单项选择题 Refer to the exhibit. How will interface FastEthernnet0/1 respond when an 802.1x-enabled client connects to the port？ （）
单项选择题 An attacker is launching a DoS attack on the Company network using a hacking tool designed to exhaust the IP address space available from the DHCP servers for a period of time. Which procedure would best defend against this type of attack？ （）