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SSCP Practice Question: A network technician needs to ensure that only…

A network technician needs to ensure that only authorized DHCP servers can assign IP addresses on the network. Which switch feature should be enabled?

⚠ Common exam trap

ISC2 often tests DHCP snooping by confusing it with Dynamic ARP Inspection, but the key distinction is that DHCP snooping directly controls DHCP server messages, while DAI relies on the snooping database to validate ARP traffic.

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 is a security feature that filters untrusted DHCP messages and builds a DHCP snooping binding database by monitoring DHCP traffic on untrusted ports. By enabling DHCP snooping on the switch, only DHCP servers connected to trusted ports can assign IP addresses, preventing rogue DHCP server attacks.

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

    Why this is correct

    DHCP snooping blocks unauthorized DHCP server responses.

  • Dynamic ARP Inspection

    Why it's wrong here

    DAI validates ARP packets, not DHCP messages.

  • Port security

    Why it's wrong here

    Port security limits MAC addresses, not DHCP servers.

  • BPDU guard

    Why it's wrong here

    BPDU guard protects against bridge loops, not DHCP.

Visual reference

Client DHCP Server 1 Discover (broadcast) 2 Offer (IP: 192.168.1.10) 3 Request (I accept) 4 Acknowledge (lease confirmed) DORA — the four-step DHCP lease process

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This SSCP practice question is part of Courseiva's free ISC2 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 SSCP exam.