CCNA: Cisco Certified Network Associate — Question 294

Which function is performed by DHCP snooping?

Answer options

• A. listens to multicast traffic for packet forwarding
• B. rate-limits certain traffic
• C. propagates VLAN information between switches
• D. provides DDoS mitigation

Correct answer: B

Explanation

The correct answer is B because DHCP snooping is primarily used to enforce rate limits on DHCP messages to prevent DHCP-based attacks. Options A, C, and D do not accurately describe the specific functionality of DHCP snooping, as it does not listen to multicast traffic, propagate VLAN information, or provide DDoS mitigation.