JNCIA-SEC Srx Series Service Gateways Practice Question
You are troubleshooting a traffic flow issue on an SRX Series gateway and need to trace packets traversing the SPUs to determine where traffic is being dropped. Which CLI command initiates real-time packet tracing on the SRX forwarding plane?
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
✓
monitor security flow traceoptions
The monitor security flow traceoptions command enables real-time logging and debugging of traffic flows passing through the Security Processing Units (SPUs) on an SRX device.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
monitor traffic interface ge-0/0/0
Why it's wrong here
This command captures raw packets on a specific interface similar to tcpdump, but does not show SRX SPU session processing states.
- ✓
monitor security flow traceoptions
Why this is correct
This command activates the flow monitoring facility to trace packet processing steps through the security engine.
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show security flow session
Why it's wrong here
This command displays active sessions currently in the session table, but does not actively trace packets in real time.
- ✗
traceoptions security packet-log start
Why it's wrong here
This is an invalid CLI syntax structure for security packet logging.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIA-SEC practice question is part of Courseiva's free Juniper Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the JNCIA-SEC exam.