hardMultiple SelectObjective-mapped
CCNP Practice Question: Which three statements about DHCP snooping are…
Which three statements about DHCP snooping are true? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
DHCP snooping builds a binding database by examining DHCPACK messages received on trusted ports.
DHCP snooping is a security feature that filters untrusted DHCP messages. It builds a binding database from DHCPACK messages. Trusted ports are typically uplinks to DHCP servers. The rate limit is applied on untrusted ports to prevent DHCP starvation. Option 82 (relay agent information) is inserted by the switch on untrusted ports. DHCP snooping does not prevent rogue DHCP servers on trusted ports, as those are allowed by default.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
DHCP snooping builds a binding database by examining DHCPACK messages received on trusted ports.
Why this is correct
Correct because the switch populates the DHCP snooping binding table using the client information from DHCPACK packets.
- ✓
Ports connected to DHCP servers should be configured as trusted ports to allow server messages.
Why this is correct
Correct because trusted ports are allowed to send DHCPOFFER, DHCPACK, etc., without being dropped by snooping.
- ✗
The ip dhcp snooping limit rate command is used to restrict the number of DHCP packets per second on trusted ports.
Why it's wrong here
Incorrect because rate limiting is applied on untrusted ports to mitigate DHCP starvation attacks, not on trusted ports.
- ✓
DHCP snooping can insert Option 82 information into DHCP requests received on untrusted ports.
Why this is correct
Correct because the switch adds relay agent information (Option 82) to DHCP packets from untrusted ports before forwarding.
- ✗
DHCP snooping prevents rogue DHCP server attacks by blocking all DHCP server messages on trusted ports.
Why it's wrong here
Incorrect because DHCP snooping blocks server messages on untrusted ports, not on trusted ports; trusted ports are allowed to send server messages.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.