This 350-601 practice question tests your understanding of is deploying ip source guard on a nexus switch. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
Dynamic ARP Inspection
Why wrong: DAI is separate, though often used together.
ACL
Why wrong: ACLs are not required.
DHCP snooping
IP Source Guard uses DHCP snooping bindings.
Cisco TrustSec
Why wrong: TrustSec is not required.
Port security
Why wrong: Port security is independent.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
DHCP snooping
IP Source Guard relies on DHCP snooping binding table and validates source IP against it.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Dynamic ARP Inspection
Why it's wrong here
DAI is separate, though often used together.
ACL
Why it's wrong here
ACLs are not required.
DHCP snooping
Why this is correct
IP Source Guard uses DHCP snooping bindings.
Related concept
Standard ACLs match source addresses.
Cisco TrustSec
Why it's wrong here
TrustSec is not required.
Port security
Why it's wrong here
Port security is independent.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 350-601 ACL questions on filtering logic and placement.
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise 350-601 questions linked to Network.
Practise 350-601 questions linked to Compute.
Practise 350-601 questions linked to Storage Network.
Practise 350-601 questions linked to Automation.
Practise 350-601 questions linked to Security.
Practise 350-601 questions linked to 350-601 fundamentals.
Practise 350-601 questions linked to 350-601 scenario.
Practise 350-601 questions linked to 350-601 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Standard ACLs match source addresses.
The correct answer is: DHCP snooping — IP Source Guard relies on DHCP snooping binding table and validates source IP against it.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 350-601 ACL questions on filtering logic and placement.
Standard ACLs match source addresses.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.