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Implementing and Operating Cisco Security Core Technologies (SCOR) · Cisco
Select one answer.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
OCG p. 339. "DHCP Snooping...rate-limits DHCP traffic from trusted and untrusted interfaces."
Answer is A.
Basically, DHCP snooping drops DHCP offers on untrusted ports. However, Catalyst switches do not forward DHCP discovers on untrusted ports. If do not trust the port of the valid DHCP server, then the legitimate discovers will be dropped. That is why I choose A. See source below: https://networklessons.com/switching/dhcp-snooping