JNCIP-ENT Ethernet Switching And Spanning Tree Practice Question
Which TWO security features can be configured on Juniper EX switches to prevent DHCP spoofing and ARP poisoning attacks on Layer 2 access ports? (Choose two)
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
DHCP snooping and Dynamic ARP Inspection (DAI) prevent DHCP spoofing and ARP poisoning respectively.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Storm control
Why it's wrong here
Storm control mitigates broadcast/multicast traffic floods.
- ✗
BPDU guard
Why it's wrong here
BPDU guard protects against spanning tree loops.
- ✓
DHCP snooping
Why this is correct
DHCP snooping builds a binding database to prevent rogue DHCP servers and IP spoofing.
- ✗
MACsec encryption
Why it's wrong here
MACsec secures link-layer encryption, not specific DHCP/ARP protocol attacks.
- ✓
Dynamic ARP Inspection (DAI)
Why this is correct
DAI uses the DHCP snooping database to validate ARP packets and prevent ARP poisoning.
Visual reference
About these practice questions
This JNCIP-ENT question is part of Courseiva's 332-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIP-ENT practice question is part of Courseiva's free Juniper Networks 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 JNCIP-ENT exam.