You are a network administrator tasked with preventing unauthorized devices from assigning network addresses to clients on your network. Which Layer 2 security feature should you implement on the switches to achieve this goal?
DHCP snooping is a security feature that filters untrusted messages from devices attempting to assign IP addresses and builds a binding table. It prevents rogue servers from distributing addresses by permitting responses only from trusted ports. Port security limits the number of MAC addresses on a port but doesn't stop unauthorized devices from assigning addresses. Dynamic ARP Inspection protects against ARP spoofing, not unauthorized address assignment. IP Source Guard prevents IP address spoofing but relies on DHCP snooping bindings and doesn't block unauthorized devices from assigning addresses by itself.
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What is DHCP snooping and how does it prevent unauthorized address assignment?
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How does DHCP snooping integrate with other features like Dynamic ARP Inspection or IP Source Guard?
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What’s the difference between trusted and untrusted ports in DHCP snooping?
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Cisco CCNA 200-301
Security Fundamentals
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