20+ practice questions focused on VLAN — 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 VLAN PracticeA switchport connected to another switch should carry multiple VLANs, but it was manually configured as an access port. What is the most likely operational result?
Explanation: An access port is designed to carry only a single VLAN. If the link is intended to carry multiple VLANs, it must be configured as a trunk. The switch will not automatically convert the port to a trunk (B). The port remains a Layer 2 access port, not a routed Layer 3 interface (C). VLANs are not automatically summarized into a single prefix (D). The most likely result is that the link will not carry multiple VLANs as intended.
Which TWO switch port configurations are required when connecting a Cisco IP phone and a desktop PC to a single access port?
Explanation: Option B is correct because the 'switchport voice vlan' command assigns a dedicated VLAN for voice traffic, allowing the IP phone to tag its packets with the voice VLAN ID while the PC remains in the native (data) VLAN. Option D is correct because 'mls qos trust cos' preserves the Layer 2 Class of Service (CoS) markings from the IP phone, ensuring voice packets receive appropriate QoS treatment across the network. Option A is incorrect because a trunk port is not required—the access port with the voice VLAN command handles both VLANs without trunking. Option C is incorrect because disabling Spanning Tree Protocol (STP) is not a recommended practice and does not prevent voice delays; STP is essential for loop prevention and can be tuned with PortFast instead. Option E is incorrect because the port must remain a Layer 2 access port, not a routed port, to support both the PC and IP phone.
A switchport is configured for 802.1X authentication. What is the usual role of the RADIUS server in that design?
Explanation: The switch acts as the authenticator and forwards authentication requests to the RADIUS server, which validates the user or device credentials.
Which three of the following statements about VLAN Trunking Protocol (VTP) are correct? (Choose three.)
Explanation: All three selected statements are correct: VTP pruning reduces unnecessary broadcast traffic by pruning inactive VLANs from trunk links; a VTP server can create/modify/delete VLANs and propagates changes; transparent mode forwards advertisements but does not synchronize. The three distractors are incorrect. D: VTP version 3 is not backward compatible with version 1 and 2; it requires compatible versions. E: A VTP client cannot create local VLANs; it only synchronizes from the server. F: VTP uses multicast MAC address 0100.0CCC.CCCC for advertisements, not 0180.c200.0000 which is used by other protocols like STP.
A switch shows a clock that is several minutes off from other devices even though an NTP server has been configured. Which issue is the most likely cause?
Explanation: NTP requires IP reachability to the time source. If the NTP server is unreachable due to routing or ACL issues, the switch falls back to its local clock, causing drift. Option A is correct. Option B is wrong because Syslog has no effect on NTP synchronization. Option C is incorrect because NTP does not require a trunk port; it can operate over any VLAN with IP connectivity. Option D is false because DNS is only needed if the NTP server is specified by hostname; the server can be reached by IP address without DNS.
+15 more VLAN questions available
Practice all VLAN questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of VLAN. 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
VLAN 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. VLAN is tested as part of the CCNA 200-301 v2 blueprint. Practicing with targeted VLAN questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 200-301 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but VLAN 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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