- A
Access VLAN: A VLAN that carries traffic for a single end device, typically assigned to an access port.
This is correct because an access VLAN is configured on an access port and carries traffic for only one VLAN, usually for end-user devices.
- B
Trunk VLAN: A VLAN that carries traffic for multiple VLANs over a single link, typically using 802.1Q tagging.
Why wrong: This is incorrect because a trunk VLAN is not a standard term; the correct term is 'trunk link' or 'trunk port' which carries multiple VLANs. The term 'trunk VLAN' is misleading.
- C
Native VLAN: A VLAN that carries all untagged traffic on a trunk link, typically VLAN 1 by default.
Why wrong: This is incorrect because the native VLAN is not a VLAN that carries untagged traffic; rather, it is the VLAN to which untagged frames are assigned on a trunk port. The native VLAN itself is a specific VLAN (often VLAN 1) that is used for untagged frames.
- D
Voice VLAN: A VLAN dedicated to carrying voice traffic, typically with QoS markings and separate from data VLANs.
Why wrong: This is incorrect because the voice VLAN is not a separate VLAN type; it is a data VLAN used specifically for voice traffic. The term 'voice VLAN' refers to the VLAN configured for voice devices, but it is still a data VLAN.
CCNA Switching and Network Access Practice Question
This 200-301 practice question tests your understanding of switching and network access. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: an access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Match each VLAN-related term to its most accurate meaning.
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
Access VLAN: A VLAN that carries traffic for a single end device, typically assigned to an access port.
Each VLAN type serves a specific purpose: Access VLAN for end devices, Trunk VLAN for multiple VLANs over a link, Native VLAN for untagged frames, Voice VLAN for phones, Management VLAN for admin access, and Data VLAN for user traffic.
Key principle: An access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Access VLAN: A VLAN that carries traffic for a single end device, typically assigned to an access port.
Why this is correct
This is correct because an access VLAN is configured on an access port and carries traffic for only one VLAN, usually for end-user devices.
Related concept
An access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only.
- ✗
Trunk VLAN: A VLAN that carries traffic for multiple VLANs over a single link, typically using 802.1Q tagging.
Why it's wrong here
This is incorrect because a trunk VLAN is not a standard term; the correct term is 'trunk link' or 'trunk port' which carries multiple VLANs. The term 'trunk VLAN' is misleading.
- ✗
Native VLAN: A VLAN that carries all untagged traffic on a trunk link, typically VLAN 1 by default.
Why it's wrong here
This is incorrect because the native VLAN is not a VLAN that carries untagged traffic; rather, it is the VLAN to which untagged frames are assigned on a trunk port. The native VLAN itself is a specific VLAN (often VLAN 1) that is used for untagged frames.
- ✗
Voice VLAN: A VLAN dedicated to carrying voice traffic, typically with QoS markings and separate from data VLANs.
Why it's wrong here
This is incorrect because the voice VLAN is not a separate VLAN type; it is a data VLAN used specifically for voice traffic. The term 'voice VLAN' refers to the VLAN configured for voice devices, but it is still a data VLAN.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Access VLAN: A VLAN that carries traffic for a single end device, typically assigned to an access port.Correct answer▾
Why this is correct
This is correct because an access VLAN is configured on an access port and carries traffic for only one VLAN, usually for end-user devices.
✗Trunk VLAN: A VLAN that carries traffic for multiple VLANs over a single link, typically using 802.1Q tagging.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: 'Trunk VLAN' is not a recognized VLAN type; the correct concept is a trunk link that carries multiple VLANs.
Why candidates choose this
Candidates pick this because they confuse the function of a trunk (carrying multiple VLANs) with a specific VLAN type.
✗Native VLAN: A VLAN that carries all untagged traffic on a trunk link, typically VLAN 1 by default.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: The native VLAN is a specific VLAN (e.g., VLAN 1) that handles untagged frames, not a separate VLAN that carries untagged traffic.
Why candidates choose this
Candidates pick this because they misunderstand the role of the native VLAN, thinking it is a special VLAN for untagged traffic rather than a regular VLAN used for that purpose.
✗Voice VLAN: A VLAN dedicated to carrying voice traffic, typically with QoS markings and separate from data VLANs.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: Voice VLAN is a subset of data VLANs, not a distinct VLAN type. It is a data VLAN with special handling for voice traffic.
Why candidates choose this
Candidates pick this because they think voice VLAN is a separate category, but in Cisco terminology, it is a data VLAN used for voice.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
Be careful not to confuse the function of a trunk link with a VLAN type. Also, remember that native VLAN and voice VLAN are not separate VLAN types; they are specific uses of data VLANs.
Detailed technical explanation
How to think about this question
VLANs (Virtual Local Area Networks) segment a physical network into multiple logical networks to improve security and reduce broadcast domains. An access VLAN is assigned to switch ports connected to end devices like computers, meaning all traffic on that port belongs to a single VLAN. Voice VLANs are specialized VLANs configured to separate voice traffic from data traffic, typically used with IP phones to prioritize voice quality and simplify QoS policies. A trunk port carries traffic for multiple VLANs simultaneously by tagging frames with VLAN identifiers using the IEEE 802.1Q standard. This tagging allows switches to maintain VLAN separation across a single physical link. The native VLAN is a special VLAN on a trunk port that carries untagged frames; by default, this is VLAN 1 on Cisco switches. Untagged traffic arriving on a trunk port is assumed to belong to the native VLAN, which helps maintain backward compatibility with devices that do not support VLAN tagging. Confusion often arises because the terms access VLAN, voice VLAN, trunk, and native VLAN all relate to VLAN handling but serve distinct purposes. Misapplying the native VLAN concept to access ports or misunderstanding that trunks carry multiple VLANs can cause configuration errors. In practical networks, correctly configuring these VLAN types ensures proper traffic segregation, voice quality, and interoperability between switches and end devices.
KKey Concepts to Remember
- An access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only.
- A voice VLAN separates voice traffic from data traffic on a switch port, enabling QoS and prioritization for IP phones.
- A trunk port carries traffic for multiple VLANs simultaneously by tagging frames with VLAN IDs using the 802.1Q protocol.
- The native VLAN on a trunk port carries untagged traffic and is used to maintain compatibility with devices that do not tag frames.
- Cisco switches default the native VLAN to VLAN 1 unless explicitly changed in configuration.
- Trunk ports must be configured to allow multiple VLANs, whereas access ports belong to a single VLAN and do not tag frames.
- Misunderstanding the native VLAN as an access VLAN or voice VLAN leads to VLAN misconfigurations and traffic loss.
- Voice VLANs require special switchport configurations to enable both voice and data VLANs on the same physical port.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
An access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only.
Real-world example
How this comes up in practice
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
What to study next
Got this wrong? Here's your next step.
Review an access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only., then practise related 200-301 questions on the same topic to reinforce the concept.
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Switching and Network Access — study guide chapter
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FAQ
Questions learners often ask
What does this 200-301 question test?
Switching and Network Access — This question tests Switching and Network Access — An access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only..
What is the correct answer to this question?
The correct answer is: Access VLAN: A VLAN that carries traffic for a single end device, typically assigned to an access port. — Each VLAN type serves a specific purpose: Access VLAN for end devices, Trunk VLAN for multiple VLANs over a link, Native VLAN for untagged frames, Voice VLAN for phones, Management VLAN for admin access, and Data VLAN for user traffic.
What should I do if I get this 200-301 question wrong?
Review an access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only., then practise related 200-301 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
An access VLAN is assigned to a switch port connected to a single end device and carries untagged traffic for that VLAN only.
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Last reviewed: Apr 12, 2026
This 200-301 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 200-301 exam.
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