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350-701 Practice Question: Which TWO of the following are valid approaches…
Which TWO of the following are valid approaches to mitigate ARP spoofing attacks on a switched network?
⚠ Common exam trap
Cisco often tests the dependency chain: candidates may think DHCP Snooping alone mitigates ARP spoofing, but it only provides the database; DAI is the feature that actually enforces ARP validation.
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
✓
Enable Dynamic ARP Inspection (DAI) on VLANs
Dynamic ARP Inspection (DAI) is a security feature that validates ARP packets in a network. It relies on a DHCP snooping binding database to map IP addresses to MAC addresses, and it drops ARP packets that have invalid IP-to-MAC bindings, thereby preventing ARP spoofing attacks on a switched network.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable BPDU Guard on all switchports
Why it's wrong here
BPDU Guard prevents STP attacks, not ARP spoofing.
- ✓
Enable Dynamic ARP Inspection (DAI) on VLANs
Why this is correct
DAI validates ARP packets and drops invalid ones.
- ✓
Enable IP Source Guard on untrusted ports
Why this is correct
IP Source Guard filters traffic based on IP-MAC binding, preventing spoofing.
- ✗
Enable Port Security on all access ports
Why it's wrong here
Port Security limits MAC addresses but does not prevent ARP spoofing.
- ✗
Enable DHCP Snooping globally
Why it's wrong here
DHCP Snooping is a prerequisite for DAI but does not directly mitigate ARP spoofing.
Visual reference
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 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 350-701 exam.