350-601 Security Practice Question
A Nexus switch is configured with DHCP snooping. Which switchport mode is required for trusted ports to prevent rogue DHCP server attacks?
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
✓
ip dhcp snooping trust
DHCP snooping treats ports as untrusted by default. Trusted ports are explicitly configured, typically on uplink interfaces.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
ip dhcp snooping trust
Why this is correct
This interface command marks the port as trusted.
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trunk
Why it's wrong here
Trunk ports can be trusted but not automatically.
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access
Why it's wrong here
Untrusted ports are usually access ports facing hosts.
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spanning-tree portfast
Why it's wrong here
Portfast reduces convergence time but does not affect DHCP snooping.
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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.