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mediummultiple choiceObjective-mapped

A switch displays the following output:

Interface        Status         VLAN

Gi1/0/5 connected 20 Gi1/0/6 notconnect 1 Gi1/0/24 trunk trunk

Which interface is operating as an access port in VLAN 20?

Question 1mediummultiple choice
Full question →

A switch displays the following output:

Interface        Status         VLAN

Gi1/0/5 connected 20 Gi1/0/6 notconnect 1 Gi1/0/24 trunk trunk

Which interface is operating as an access port in VLAN 20?

Full question →

Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Best answer

Gi1/0/5

Correct. It is connected and assigned to VLAN 20.

B

Distractor review

Gi1/0/6

Gi1/0/6 is an access port in VLAN 1, but it is not in VLAN 20.

C

Distractor review

Gi1/0/24

Gi1/0/24 is a trunk, not an access port.

D

Distractor review

None of the interfaces

Gi1/0/5 clearly matches.

Common exam trap

Common exam trap: answer the scenario, not the keyword

A common exam trap is mistaking a trunk port for an access port because it carries VLAN 20 traffic among others. The interface Gi1/0/24 is a trunk port, not an access port, so it cannot be the correct answer even if VLAN 20 traffic passes through it. Another trap is selecting an interface that is assigned to VLAN 1 but shows 'notconnect' status, like Gi1/0/6, which means it is not operational and thus not the correct choice. Candidates must carefully distinguish between port modes and operational status to avoid these pitfalls.

Technical deep dive

How to think about this question

A VLAN (Virtual Local Area Network) segments a switch into multiple broadcast domains, allowing devices in the same VLAN to communicate as if they were on the same physical network. Access ports are switch interfaces assigned to a single VLAN and carry traffic for that VLAN only. Trunk ports, in contrast, carry traffic for multiple VLANs simultaneously, tagging frames with VLAN identifiers to maintain separation across the link. In the provided switch output, the interface Gi1/0/5 is listed as "connected" and assigned to VLAN 20, indicating it is an access port operating within VLAN 20. The interface Gi1/0/6 is "notconnect" and assigned to VLAN 1, which is the default VLAN, but it is not active or connected. The interface Gi1/0/24 is labeled as "trunk" and operates as a trunk port, carrying multiple VLANs rather than a single access VLAN. A common exam trap is confusing the interface status and VLAN assignment with port mode. For example, a trunk port can show "trunk" status and carry VLAN 20 traffic, but it is not an access port. Similarly, an interface in VLAN 1 but not connected is not operational. Understanding that an access port is assigned to a single VLAN and shows "connected" status is critical to correctly identifying the interface operating as an access port in VLAN 20.

KKey Concepts to Remember

  • A switch access port is assigned to a single VLAN and forwards untagged frames only for that VLAN.
  • Trunk ports carry traffic for multiple VLANs simultaneously by tagging frames with VLAN identifiers.
  • The interface status 'connected' indicates the port is active and has a device connected.
  • An interface showing 'notconnect' status means no device is physically connected or the link is down.
  • The VLAN number listed for an access port represents the VLAN to which the port is assigned.
  • A trunk port’s VLAN field typically shows 'trunk' because it carries multiple VLANs, not a single VLAN.
  • VLAN 1 is the default VLAN on Cisco switches and often used for management or untagged traffic by default.
  • Correctly identifying access ports requires checking both the interface status and VLAN assignment.

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.

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More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

Question 1

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Question 2

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Question 3

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Question 4

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Question 5

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Question 6

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FAQ

Questions learners often ask

What does this 200-301 question test?

A switch access port is assigned to a single VLAN and forwards untagged frames only for that VLAN.

What is the correct answer to this question?

The correct answer is: Gi1/0/5 — The output explicitly shows Gi1/0/5 in VLAN 20 and not operating as a trunk.

What should I do if I get this 200-301 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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