200-301 Cisco Certified Network Associate (CCNA)

What is the effect of this configuration?

Refer to the exhibit. What is the effect of this configuration?

  • A. The switch discards all ingress ARP traffic with invalid MAC-to-IP address bindings.
  • B. All ARP packets are dropped by the switch.
  • C. Egress traffic is passed only if the destination is a DHCP server.
  • D. All ingress and egress traffic is dropped because the interface is untrusted.
Answer: Option A.
Explanation: 

Section: Security Fundamentals
Dynamic ARP inspection is an ingress security feature; it does not perform any egress checking

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