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PCNSE · Question #571
PCNSE Question #571: Real Exam Question with Answer & Explanation
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Submitted by brentm· Apr 18, 2026Configuration Troubleshooting
Question
After some firewall configuration changes, an administrator discovers that application identification has started failing. The administrator investigates further and notices that a high number of sessions were going to a discard state with the application showing as unknown-tcp. Which possible firewall change could have caused this issue?
Options
- Aenabling Forward segments that exceed the TCP App-ID inspection queue in Device > Setup >
- Benabling Forward segments that exceed the TCP content inspection queue in Device > Setup >
- CJumbo frames were enabled on the firewall, which reduced the App-ID queue size and the
- DJumbo frames were disabled on the firewall, which reduced the queue sizes dedicated for out-of-
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Topics
#App-ID#Troubleshooting#TCP Queues#Performance