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which two actions would solve this problem?

A customer discovered that a significant outage was caused by an unauthorized Ethernet switching device
attached to the network.
In this scenario, which two actions would solve this problem? (Choose two.)

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A.
Enable 802.1x.

B.
Enable persistent MAC learning.

C.
Enable dynamic ARP inspection.

D.
Enable storm control.

3 Comments on “which two actions would solve this problem?

  1. test says:

    I understand best solution to configure mac-limit and persistent mac learning but i don’t understand 802.1X do ??

    Basically 802.1X will Authenticate client that is capable of 802.1X but since Rogue switch doesn’t support 802.1X , we assume that rouge switch will assigned to GUEST Vlan




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  2. ccck says:

    I think correct answer should be B and D
    Persistent MAC learning, also known as sticky MAC, is a port security feature that allows retention of dynamically learned MAC addresses on an interface across reboots of the switch
    Storm control enables you to prevent network outages caused by broadcast storms on the LAN.




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  3. Alex says:

    @test
    client is not aware of dot1x. dot1x is configured only on the switch.
    based on the config on the switch the authentication failed user may be placed in guest or a failover vlan or could be rejected altogether.




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