What is the effect of entering the ip arp inspection vlan 10 configuration command on a switch?

What is the effect of entering the ip arp inspection vlan 10 configuration command on a switch?

• A. It enables DAI on specific interfaces configured with DHCP snooping
• B. It disables ARP requests for VLAN 10 traffic
• C. It allows all ARP requests to pass through the switch uninspected
• D. It increases the ARP timeout for VLAN 10

Answer: (A)

Entering the command to configure IP ARP Inspection (DAI) on a specific VLAN, such as VLAN 10, enables dynamic ARP inspection for that VLAN. Dynamic ARP Inspection helps protect the network from ARP spoofing attacks by ensuring that only valid ARP requests and responses are processed by the switch. When you enable DAI on a VLAN, the switch intercepts ARP packets and verifies their authenticity against the DHCP snooping binding database, which contains mappings of IP addresses to MAC addresses obtained from DHCP. This means that any ARP packet that does not match the proper association will be dropped, helping to prevent malicious devices from sending forged ARP responses that could compromise network integrity or intercept traffic. This action highlights the importance of securing ARP traffic within the VLAN, ensuring that only legitimate ARP packets created by authorized devices are allowed. Thus, by using this command, you enhance the security posture of your network within that specific VLAN.

Entering the command to configure IP ARP Inspection (DAI) on a specific VLAN, such as VLAN 10, enables dynamic ARP inspection for that VLAN. Dynamic ARP Inspection helps protect the network from ARP spoofing attacks by ensuring that only valid ARP requests and responses are processed by the switch.

When you enable DAI on a VLAN, the switch intercepts ARP packets and verifies their authenticity against the DHCP snooping binding database, which contains mappings of IP addresses to MAC addresses obtained from DHCP. This means that any ARP packet that does not match the proper association will be dropped, helping to prevent malicious devices from sending forged ARP responses that could compromise network integrity or intercept traffic.

This action highlights the importance of securing ARP traffic within the VLAN, ensuring that only legitimate ARP packets created by authorized devices are allowed. Thus, by using this command, you enhance the security posture of your network within that specific VLAN.