Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A user reports that a laptop can connect to the correct SSID but repeatedly fails authentication when joining the WLAN. Which category of issue is most strongly indicated?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
A security or authentication mismatch related to WLAN access
This is correct because the client can discover the SSID but fails when authentication should succeed.
B
Distractor review
A missing OSPF router ID on the access point
This is wrong because OSPF router IDs are unrelated to WLAN client authentication.
C
Distractor review
A routed-port mismatch on the switch uplink
This is wrong because the symptom points specifically to wireless join/authentication behavior.
D
Distractor review
A DHCP relay problem on the client
This is wrong because authentication failure occurs before ordinary IP configuration becomes the main issue.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A common exam trap is selecting options related to routing protocols or DHCP relay issues when a client fails to authenticate on a WLAN. Candidates may incorrectly assume that IP configuration problems or routing mismatches cause authentication failures. However, authentication occurs before IP assignment, so DHCP or OSPF issues cannot cause repeated authentication failures. This trap distracts from the correct focus on wireless security settings and credentials, which are the root cause when a client sees the SSID but cannot authenticate.
Technical deep dive
How to think about this question
Wireless LAN (WLAN) authentication is a critical step in the process where a client device proves its identity to the wireless network before gaining access. This process involves protocols such as WPA2-Enterprise or WPA3, which use credentials like usernames and passwords, certificates, or pre-shared keys. The client must successfully complete authentication after associating with the correct SSID to access network resources. Failure at this stage indicates a problem with security parameters rather than physical connectivity or network routing. In Cisco WLAN environments, when a client can see and select the correct SSID but repeatedly fails authentication, it strongly suggests a mismatch in security settings. This could be due to incorrect credentials, incompatible encryption types, or misconfigured authentication servers like RADIUS. The device’s association with the SSID confirms that Layer 1 and Layer 2 connectivity are functional, so the issue lies specifically in Layer 2 or Layer 3 security policies. A common exam trap is confusing authentication failure with connectivity issues such as DHCP or routing problems. DHCP relay or OSPF router ID problems occur after successful authentication and association, during IP configuration or routing phases. Misinterpreting these symptoms can lead to selecting incorrect answers related to routing protocols or uplink port configurations. Practically, authentication failure prevents the client from joining the network, so troubleshooting should focus on wireless security settings and credentials first.
KKey Concepts to Remember
- A wireless client must successfully authenticate after associating with the correct SSID to gain access to the WLAN.
- Authentication failure despite correct SSID association indicates a security or credential mismatch rather than physical connectivity issues.
- Cisco WLAN authentication often uses protocols like WPA2-Enterprise, which require matching credentials and compatible encryption settings.
- DHCP relay and routing protocols like OSPF operate after successful authentication and association, so they do not cause authentication failures.
- Switch uplink port configurations affect wired network connectivity but do not directly impact wireless client authentication processes.
- Repeated authentication failures suggest checking RADIUS server settings, encryption types, and client credentials in Cisco wireless deployments.
- SSID discovery and association confirm Layer 1 and Layer 2 connectivity, isolating the problem to Layer 2 security or authentication mechanisms.
- Exam questions about WLAN failures require distinguishing between association, authentication, and IP configuration stages for accurate troubleshooting.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
A wireless client must successfully authenticate after associating with the correct SSID to gain access to the WLAN.
What is the correct answer to this question?
The correct answer is: A security or authentication mismatch related to WLAN access — The strongest indication is a wireless security or authentication mismatch rather than a pure RF coverage problem. In practical terms, the laptop can already see and attempt to join the correct SSID, which means discovery is working. Repeated authentication failure points more directly to credentials, security settings, or authentication-policy alignment than to channel or signal absence. This question is about recognizing the stage of failure. The client is finding the WLAN, but it is not being accepted onto it.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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