350-601 DHCP Snooping Practice Question
A security engineer is deploying IP Source Guard on a Nexus switch. Which two components must be operational for IP Source Guard to function correctly?
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
✓
Dynamic ARP Inspection
IP Source Guard on Nexus switches relies on both DHCP snooping and Dynamic ARP Inspection. DHCP snooping builds the binding table that IP Source Guard uses to validate source IP addresses, while Dynamic ARP Inspection prevents ARP spoofing attacks and ensures IP integrity. Without both, IP Source Guard cannot function correctly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Dynamic ARP Inspection
Why this is correct
Dynamic ARP Inspection is required to validate ARP packets and ensure IP-MAC bindings are consistent with the DHCP snooping database.
- ✗
ACL
Why it's wrong here
ACLs are not required.
- ✓
DHCP snooping
Why this is correct
DHCP snooping builds the binding table used by IP Source Guard to verify source IP addresses.
- ✗
Cisco TrustSec
Why it's wrong here
TrustSec is not required.
- ✗
Port security
Why it's wrong here
Port security is independent.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 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 350-601 exam.