The answer is persistent cookies from the web application. When the Cisco ASA terminates a clientless SSL VPN session due to the vpn-idle-timeout or vpn-session-timeout, it only tears down the VPN tunnel and portal session, but it cannot invalidate the authentication cookies that the user’s browser already received from the internal web application. Because those cookies remain valid and the web application lacks its own session timeout mechanism, the user can continue accessing the application directly through the browser without re-authenticating through the ASA. On the Cisco SCOR 350-701 exam, this scenario tests your understanding that clientless SSL VPN operates at the transport layer, while application-layer cookies persist independently—a common trap is assuming the ASA controls all session state. Remember: the ASA kills the tunnel, not the cookie. Memory tip: “Tunnel times out, cookie stays stout.”
350-701 Security Concepts Practice Question
This 350-701 practice question tests your understanding of security concepts. 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 company deploys Cisco ASA with clientless SSL VPN to provide remote access to internal web-based applications. Users connect via a web browser and authenticate using RADIUS. The security policy requires that users re-authenticate after 15 minutes of inactivity. The administrator configures the group-policy with 'vpn-idle-timeout 15' and 'vpn-session-timeout 60'. After testing, the administrator finds that users can still access the internal web applications even after the VPN session has timed out. The administrator checks the ASA logs and confirms that the VPN session is indeed terminated. The web applications are standard HTTP-based and do not have their own session timeout mechanisms. What is the most likely cause of this issue?
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 the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The web applications use persistent cookies that do not require re-authentication.
Option A is correct because clientless SSLVPN uses a web portal that relies on cookies to maintain the user's authenticated state. When the VPN session times out, the ASA terminates the VPN tunnel, but the web browser still holds the authentication cookie for the internal web application. Since the web application itself has no session timeout, the cookie remains valid, allowing the user to continue accessing the application without re-authentication. The ASA's vpn-idle-timeout and vpn-session-timeout only control the VPN tunnel, not the application-layer cookies.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 web applications use persistent cookies that do not require re-authentication.
Why this is correct
Persistent cookies maintain the application session independently of the VPN session.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The clientless SSL VPN portal uses 'application-specific' timeout settings.
Why it's wrong here
ASA does not have application-specific timeout settings for clientless VPN.
✗
The RADIUS server is sending the 'Session-Timeout' attribute that overrides the ASA configuration.
Why it's wrong here
This would change the timeout, but not allow access after termination.
✗
The ASA is configured with 'webvpn' and 'cache' enabled, which caches the application pages.
Why it's wrong here
Caching might store page content, but not session state.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between VPN-layer timeouts and application-layer session persistence, trapping candidates who assume that terminating the VPN tunnel automatically invalidates all application access.
Detailed technical explanation
How to think about this question
Clientless SSLVPN works by proxying HTTP requests through the ASA, which injects a session cookie (e.g., 'webvpn') to track the user's VPN session. When the VPN session times out, the ASA removes the session from its state table, but the browser's cookie for the internal web application (set by the application itself) remains untouched. This is a common issue in environments where web applications use persistent cookies without server-side validation, as the ASA cannot invalidate cookies it did not create. In real-world scenarios, administrators must configure application-level session timeouts or use URL rewriting to enforce re-authentication.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Security Concepts — This question tests Security Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The web applications use persistent cookies that do not require re-authentication. — Option A is correct because clientless SSL VPN uses a web portal that relies on cookies to maintain the user's authenticated state. When the VPN session times out, the ASA terminates the VPN tunnel, but the web browser still holds the authentication cookie for the internal web application. Since the web application itself has no session timeout, the cookie remains valid, allowing the user to continue accessing the application without re-authentication. The ASA's vpn-idle-timeout and vpn-session-timeout only control the VPN tunnel, not the application-layer cookies.
What should I do if I get this 350-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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?
Read the scenario before looking for a memorised answer.
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Question Discussion
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