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200-901 Practice Question: Which TWO statements about VLAN trunking are true?
Which TWO statements about VLAN trunking are true?
⚠ Common exam trap
Cisco often tests the misconception that trunk links are used to connect end hosts (like PCs or servers), when in fact trunk links are only used between network infrastructure devices (switches, routers, firewalls) to carry multiple VLANs.
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
✓
Trunk links carry traffic for multiple VLANs.
Trunk links carry traffic for multiple VLANs simultaneously by tagging each frame with a VLAN identifier. This allows a single physical link to transport traffic from different VLANs between switches or between a switch and a router. Option C is correct because the primary purpose of a trunk is to multiplex VLAN traffic over one link.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Trunk links can only carry one VLAN at a time.
Why it's wrong here
Trunk links carry multiple VLANs simultaneously.
- ✗
Trunk links use access ports.
Why it's wrong here
Access ports belong to a single VLAN; trunk ports are used for trunking.
- ✓
Trunk links carry traffic for multiple VLANs.
Why this is correct
Trunk links allow multiple VLANs by tagging frames.
- ✓
Trunk links require 802.1Q encapsulation.
Why this is correct
802.1Q is the standard for VLAN tagging on trunk links.
- ✗
Trunk links are used to connect a switch to a single host.
Why it's wrong here
Trunk links connect switches or routers, not individual hosts.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 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 200-901 exam.