Continue your lesson
Tie every forwarding decision to interface state, Layer 2 state, addressing, routing, and policy.
Block 1 of 1Compare Trunk port · IEEE 802.1Q · Native VLAN · Allowed VLAN list
Current · 19 min
Compare Trunk port · IEEE 802.1Q · Native VLAN · Allowed VLAN list
Optional concept notes
Trunk port
Carries multiple VLANs between network devices over one link.
IEEE 802.1Q
Adds a VLAN identification tag to Ethernet frames.
Native VLAN
Carries untagged traffic on an IEEE 802.1Q trunk.
Cross-certificationCCNA ↔ Net+
Native VLAN
The core idea stays the same. The surrounding objective changes the evidence, decision, or task the exam asks for.
Allowed VLAN list
Restricts which VLANs may cross a configured trunk.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Practice the reasoning here
Write or inspect a small Cisco configuration, name the expected show-command evidence, and explain how a frame or packet crosses it.
- State the expected result before changing or testing anything.
- Name the observation, command, log, or report that would confirm it.
- Explain why the closest alternative does not fit the same requirement.
Check the whole objective
This unlocks objective 2.2 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.