20+ practice questions focused on Etherchannel — one of the most tested topics on the CCNA 200-301 v2 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Etherchannel PracticeMatch each switching feature to its most accurate purpose.
Explanation: Which accurately pairs each switching feature with its purpose: Spanning Tree Protocol (STP) prevents loops in a switched network by blocking redundant paths; VLAN Trunking Protocol (VTP) manages the addition, deletion, and renaming of VLANs across the network; EtherChannel aggregates multiple physical links into a single logical link for increased bandwidth and redundancy; Port Security limits the number of MAC addresses allowed on a switch port to prevent unauthorized access; Dynamic Trunking Protocol (DTP) automatically negotiates trunking between switches; and Rapid PVST+ provides fast convergence for each VLAN using multiple spanning tree instances. The other options contain incorrect pairings, such as mixing up STP with VLAN management or EtherChannel with loop prevention.
An EtherChannel should form using LACP between two switches. One side is configured for LACP active, and the other side is configured for LACP active. What is the expected result if the other link settings also match?
Explanation: The EtherChannel should form successfully if the underlying link settings are compatible. LACP active/active is a valid combination, as both switches actively negotiate the bundle. However, the channel does not automatically become a routed interface (option C is incorrect because EtherChannel can operate as Layer 2 or Layer 3 depending on configuration, not automatically due to LACP mode). Additionally, VLAN tags are not removed by default from the bundle (option D is incorrect; VLAN tagging is preserved based on the switchport mode and allowed VLAN settings). The key troubleshooting point is to ensure that other interface parameters such as speed, duplex, and VLAN settings match across the member ports.
You are connected to SW1. An EtherChannel between SW1 and SW2 using LACP must be established on interfaces GigabitEthernet0/1 and GigabitEthernet0/2. Currently, the channel is not forming. Inspect the provided configuration and output, then apply the necessary commands on SW1 to resolve the issue and bring up the Port-Channel interface.
Explanation: The EtherChannel failed because the two member interfaces on SW1 have mismatched speed (Gi0/1: 1000 Mbps, Gi0/2: 100 Mbps) and duplex (Gi0/1: full, Gi0/2: half), and their native VLANs differ (Gi0/1: VLAN 1, Gi0/2: VLAN 10). LACP requires all bundled ports to have identical speed, duplex, and VLAN configuration. To fix, on SW1 configure both interfaces with consistent settings: set speed 1000, duplex full, and switchport access vlan 1 (or a common trunk native VLAN). Also ensure both sides use the same LACP mode (both active or active/passive); here SW2's Gi0/2 is passive, which is acceptable with SW1's active, so the primary issue is the mismatched physical and VLAN parameters. After correction, the channel will form.
Two switches are connected with EtherChannel using LACP. One side is configured with mode active and the other side with mode passive. What happens?
Explanation: LACP forms an EtherChannel when at least one side actively negotiates. Active plus passive is a valid combination, so the bundle comes up if the physical settings match.
You are connected to SW1. Two switches, SW1 and SW2, are connected via four GigabitEthernet links. Configure LACP EtherChannel between them using interfaces GigabitEthernet0/1 through GigabitEthernet0/4 on SW1. Set the channel-group mode to active on SW1. The port-channel interface must be configured as a trunk, allowing VLANs 10, 20, 30. However, the EtherChannel is not forming. The current configuration is shown below. Identify and fix the issue, then verify the EtherChannel is operational.
Explanation: The EtherChannel is not forming because the Port-channel1 interface is configured as a Layer 3 interface (no switchport, IP address), while the member interfaces are Layer 2 switchports (switchport mode trunk). This mismatch prevents the channel from bundling. To fix this, configure Port-channel1 as a Layer 2 trunk interface with the same allowed VLANs. The solution: remove the no switchport command and the IP address, then apply switchport mode trunk and switchport trunk allowed vlan 10,20,30. After correction, the ports should bundle and the show etherchannel summary will show the ports as bundled (P) and the port-channel as Layer 2 (S).
+15 more Etherchannel questions available
Practice all Etherchannel questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Etherchannel. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Etherchannel questions on the 200-301 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Etherchannel is tested as part of the CCNA 200-301 v2 blueprint. Practicing with targeted Etherchannel questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Etherchannel is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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