- A
The client's GlobalProtect app is an older version that does not support TLS 1.2.
An older client may not support TLS 1.2, causing the connection to fail if the gateway requires it.
- B
The gateway authentication profile is set to use RADIUS instead of certificate.
Why wrong: Authentication profile is not used during TLS handshake; it's used after tunnel establishment.
- C
The portal is configured with an incorrect server certificate common name (CN) that does not match the portal's FQDN.
Why wrong: The administrator already verified that the CN matches the FQDN.
- D
The GlobalProtect gateway is configured to require HIP match, but the user's endpoint does not meet the HIP profile.
Why wrong: HIP mismatch results in a post-connection error, not a secure connection failure.
PCNSE Secure Access and VPN Practice Question
This PCNSE practice question tests your understanding of secure access and vpn. 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.
A remote user reports they cannot connect to the corporate network via GlobalProtect. The GlobalProtect client shows 'Connection failed. Unable to establish a secure connection.' The portal and gateway are configured with certificate authentication. The administrator verifies that the portal/gateway certificates are valid and not expired, and the common name matches the portal's FQDN. The client's machine time is synchronized. Which configuration misconfiguration is most likely the cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The client's GlobalProtect app is an older version that does not support TLS 1.2.
Option D is correct because if the GlobalProtect client is an older version that does not support TLS 1.2, it will fail to establish the secure connection when the gateway requires TLS 1.2. Option A is incorrect because a HIP mismatch would typically cause a different error (e.g., 'Access denied' or 'Not compliant') after authentication, not a connection failure. Option B is incorrect because the administrator already confirmed the certificate CN matches the portal FQDN. Option C is incorrect because the gateway authentication profile is not used for the TLS handshake; it is used after the tunnel is established.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The client's GlobalProtect app is an older version that does not support TLS 1.2.
- ✗
The gateway authentication profile is set to use RADIUS instead of certificate.
Why it's wrong here
Authentication profile is not used during TLS handshake; it's used after tunnel establishment.
- ✗
The portal is configured with an incorrect server certificate common name (CN) that does not match the portal's FQDN.
Why it's wrong here
The administrator already verified that the CN matches the FQDN.
- ✗
The GlobalProtect gateway is configured to require HIP match, but the user's endpoint does not meet the HIP profile.
Why it's wrong here
HIP mismatch results in a post-connection error, not a secure connection failure.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PCNSE questions on access control and AAA configuration.
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FAQ
Questions learners often ask
What does this PCNSE question test?
Secure Access and VPN — This question tests Secure Access and VPN — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: The client's GlobalProtect app is an older version that does not support TLS 1.2. — Option D is correct because if the GlobalProtect client is an older version that does not support TLS 1.2, it will fail to establish the secure connection when the gateway requires TLS 1.2. Option A is incorrect because a HIP mismatch would typically cause a different error (e.g., 'Access denied' or 'Not compliant') after authentication, not a connection failure. Option B is incorrect because the administrator already confirmed the certificate CN matches the portal FQDN. Option C is incorrect because the gateway authentication profile is not used for the TLS handshake; it is used after the tunnel is established.
What should I do if I get this PCNSE question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PCNSE questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jun 24, 2026
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