Which VLANs a hybrid port transmits tagged
Short answer
B Only VLAN 2, VLAN 3 and VLAN 100 leave GigabitEthernet0/0/1 with an 802.1Q tag, since `port hybrid tagged vlan 2 to 3 100` defines the tagged set.
Question
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interface GigabitEthernet0/0/1
port hybrid tagged vlan 2 to 3 100
port hybrid untagged vlan 4 6
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Key Takeaways
The question tests reading a Huawei hybrid-port configuration: only the VLANs explicitly listed under
port hybrid taggedare transmitted tagged, not every VLAN referenced in the interface.
On a hybrid interface, the port hybrid tagged clause alone decides which VLANs are transmitted with an 802.1Q tag. Here the correct answer is B: VLAN 2, VLAN 3 and VLAN 100 are tagged, while VLAN 4 and VLAN 6 are sent untagged.
Common mistake: Choosing C (2, 3, 4, 6, 100) by combining the tagged and untagged VLAN lists; VLAN 4 and VLAN 6 are explicitly de-tagged on egress, so they are never transmitted tagged.
Expert Analysis
What the command actually says
The interface is a hybrid port. Hybrid ports are configured in two separate clauses: port hybrid tagged vlan... lists the VLANs whose frames leave the interface with an 802.1Q tag, and port hybrid untagged vlan... lists the VLANs whose frames are de-tagged on egress. Here the tagged clause is literally vlan 2 to 3 100, which expands to VLAN 2, VLAN 3 and VLAN 100. The untagged clause covers VLAN 4 and VLAN 6.
Why option C looks tempting but fails
Option C is the trap answer: it bundles every VLAN mentioned anywhere in the configuration into one list. That sounds reasonable if you read the question as "which VLANs does this interface carry" rather than "which VLANs does it transmit tagged." It satisfies the part of the question about the interface handling VLAN 4 and VLAN 6, but it stops being correct at the word tagged — frames belonging to VLAN 4 and VLAN 6 are explicitly stripped of their tags by the port hybrid untagged clause before transmission. Some learners also argue that a hybrid port must carry VLAN 1 (the default PVID), which is the logic behind options A and D; but VLAN 1 is not listed in either the tagged or the untagged clause here, so no VLAN 1 frame is transmitted with a tag by this interface.
The correct choice Option B is the only answer that mirrors the tagged clause exactly: VLAN 2, VLAN 3 and VLAN 100 leave the port tagged, while VLAN 4 and VLAN 6 leave untagged and VLAN 1 is merely the untagged PVID for ingress classification.
Exam Strategy
In hybrid-port questions, ignore VLANs that appear only in the untagged clause when the stem asks about tagged transmission — read the two clauses as mutually exclusive egress lists. Also treat the default PVID (VLAN 1) as an ingress classification detail, not as a tagged egress VLAN, unless VLAN 1 also appears in the tagged clause.
Frequently Asked Questions
Does a hybrid port always send VLAN 1 frames tagged?
port hybrid tagged.What is the difference between hybrid tagged and hybrid untagged?
port hybrid tagged keeps the 802.1Q header on egress, while port hybrid untagged removes it. Each VLAN belongs to exactly one of the two lists on a given interface.Why is option C wrong for this question?
Community Votes
100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 2 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 2
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buggybombastis10 👍 2The answer is B. 2 3 100
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Nimrod Swaji 👍 1 Answered BThe answer is B because it is the only tagged
Reader comments & corrections
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