CCNA Network Infrastructure and Connectivity Practice Question
This 200-301 practice question tests your understanding of network infrastructure and connectivity. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Network Topology
You are connected to the Cisco WLC (WLC-1) via its management IP 192.168.1.10. The wireless network 'CorpNet' is configured but clients cannot associate. Troubleshoot and resolve the issue: clients report 'Association failed' and the SSID is not visible in site surveys. Ensure that after your fix, the SSID is broadcast, WPA3 is used, and the WLAN is mapped to VLAN 20. Also, verify the WLC management interface is accessible over HTTPS.
WLC-1# show wlan summary
Number of WLANs.................................. 1
WLAN ID WLAN Profile Name / SSID Status Interface
------- ----------------------------- -------- ----------
1 CorpNet / CorpNet Disabled management
WLC-1# show wlan 1
WLAN Profile Name........... CorpNet
SSID........................ CorpNet
Status...................... Disabled
Security Policies........... WPA3
Broadcast SSID.............. Disabled
Interface................... management
VLAN Tagging................ Disabled
WLC-1# show interface summary
Interface Name Port Vlan Id IP Address Type
----------------- ------ ------- --------------- ----------
management LAG 1 192.168.1.10 Static
WLC-1# show running-config | include https
(config)# no ip http secure-server
A
Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server.
This option correctly addresses all issues: the WLAN was disabled, SSID was hidden, mapped to the management interface instead of a user VLAN, and HTTPS was disabled. Enabling the WLAN, broadcasting the SSID, mapping to a VLAN 20 dynamic interface, and enabling HTTPS restores client association and management access.
B
Enable the WLAN, set Broadcast SSID to Enabled, change the interface to the management interface, and enable the HTTPS server.
Why wrong: This is incorrect because the WLAN should be mapped to a user VLAN (VLAN 20), not the management interface. Mapping to the management interface would place clients in the management VLAN, which is a security risk and not the requirement.
C
Enable the WLAN, keep Broadcast SSID Disabled for security, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server.
Why wrong: This is incorrect because the SSID must be broadcast (Broadcast SSID Enabled) for clients to see it in site surveys. Hiding the SSID prevents clients from discovering it, causing association failures.
D
Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, but leave HTTPS disabled for security.
Why wrong: This is incorrect because the question requires the WLC management interface to be accessible over HTTPS. Disabling HTTPS would prevent management access via HTTPS, violating the requirement.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server.
The WLAN was disabled, the SSID was hidden (Broadcast SSID Disabled), and it was incorrectly mapped to the management interface instead of a user VLAN. Additionally, HTTPS access was disabled. The solution: enable the WLAN, enable SSID broadcast, change the interface to a VLAN 20 interface (e.g., create a dynamic interface 'vlan20' with VLAN 20), and enable the HTTPS server for management access. Note: On an AireOS WLC, the correct commands use `config wlan enable <wlan_id>`, `config wlan broadcast-ssid enable <wlan_id>`, and `config network secureweb enable` for HTTPS.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server.
Why this is correct
This option correctly addresses all issues: the WLAN was disabled, SSID was hidden, mapped to the management interface instead of a user VLAN, and HTTPS was disabled. Enabling the WLAN, broadcasting the SSID, mapping to a VLAN 20 dynamic interface, and enabling HTTPS restores client association and management access.
Related concept
Access ports place end devices into a single VLAN.
✗
Enable the WLAN, set Broadcast SSID to Enabled, change the interface to the management interface, and enable the HTTPS server.
Why it's wrong here
This is incorrect because the WLAN should be mapped to a user VLAN (VLAN 20), not the management interface. Mapping to the management interface would place clients in the management VLAN, which is a security risk and not the requirement.
✗
Enable the WLAN, keep Broadcast SSID Disabled for security, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server.
Why it's wrong here
This is incorrect because the SSID must be broadcast (Broadcast SSID Enabled) for clients to see it in site surveys. Hiding the SSID prevents clients from discovering it, causing association failures.
✗
Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, but leave HTTPS disabled for security.
Why it's wrong here
This is incorrect because the question requires the WLC management interface to be accessible over HTTPS. Disabling HTTPS would prevent management access via HTTPS, violating the requirement.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server.Correct answer▾
Why this is correct
This option correctly addresses all issues: the WLAN was disabled, SSID was hidden, mapped to the management interface instead of a user VLAN, and HTTPS was disabled. Enabling the WLAN, broadcasting the SSID, mapping to a VLAN 20 dynamic interface, and enabling HTTPS restores client association and management access.
✗Enable the WLAN, set Broadcast SSID to Enabled, change the interface to the management interface, and enable the HTTPS server.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: The management interface is for WLC management traffic, not client data. Client traffic should be on a separate user VLAN.
Why candidates choose this
Candidates might think the management interface is the only interface available or confuse it with a VLAN interface.
✗Enable the WLAN, keep Broadcast SSID Disabled for security, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: Broadcast SSID must be enabled for the SSID to be visible. Disabling it hides the SSID, which contradicts the requirement to make it visible.
Why candidates choose this
Candidates may believe hiding the SSID improves security and is acceptable, but the question explicitly requires the SSID to be broadcast.
✗Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, but leave HTTPS disabled for security.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: HTTPS must be enabled for management access. Disabling it would block HTTPS connections to the WLC.
Why candidates choose this
Candidates might disable HTTPS thinking it reduces attack surface, but the question explicitly requires HTTPS access.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
Access ports place end devices into a single VLAN.
Trunk ports carry multiple VLANs between switches.
Allowed VLAN lists decide which VLANs can cross a trunk.
Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
→Use show vlan brief to verify access VLANs.
→Use show interfaces trunk to verify trunk state and allowed VLANs.
→Do not treat every same-VLAN issue as a routing problem.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Real-world example
How this comes up in practice
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 200-301 question in full detail.
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related 200-301 questions on switching, trunking, and access-port configuration.
Network Infrastructure and Connectivity — This question tests Network Infrastructure and Connectivity — Access ports place end devices into a single VLAN..
What is the correct answer to this question?
The correct answer is: Enable the WLAN, set Broadcast SSID to Enabled, create a dynamic interface for VLAN 20 and map the WLAN to it, and enable the HTTPS server. — The WLAN was disabled, the SSID was hidden (Broadcast SSID Disabled), and it was incorrectly mapped to the management interface instead of a user VLAN. Additionally, HTTPS access was disabled. The solution: enable the WLAN, enable SSID broadcast, change the interface to a VLAN 20 interface (e.g., create a dynamic interface 'vlan20' with VLAN 20), and enable the HTTPS server for management access. Note: On an AireOS WLC, the correct commands use `config wlan enable <wlan_id>`, `config wlan broadcast-ssid enable <wlan_id>`, and `config network secureweb enable` for HTTPS.
What should I do if I get this 200-301 question wrong?
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related 200-301 questions on switching, trunking, and access-port configuration.
What is the key concept behind this question?
Access ports place end devices into a single VLAN.
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