JNCIA-SEC Monitoring And Troubleshooting Practice Question
During session table analysis, you notice a session stuck in the 'SynSent' state. What does this state indicate about the traffic flow?
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 SRX has received a SYN packet from the source, but no SYN-ACK has been returned from the destination.
In Junos security flow, TCP session states track the handshake. SynSent indicates the SRX has seen a TCP SYN packet from the client, but has not yet seen the SYN-ACK from the server.
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 TCP session has timed out and is waiting to be purged from memory.
Why it's wrong here
Timed-out sessions are typically in closing states or purged immediately based on aging timers.
- ✗
The server has reset the connection via a RST packet.
Why it's wrong here
RST packets cause the session to transition to closing or immediately remove it.
- ✗
The three-way handshake has completed successfully and data transfer is underway.
Why it's wrong here
Completed handshakes are indicated by the 'Established' state.
- ✓
The SRX has received a SYN packet from the source, but no SYN-ACK has been returned from the destination.
Why this is correct
SynSent means the forward SYN was processed, but the reverse SYN-ACK has not traversed the security device yet.
Visual reference
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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.