JNCIA-SEC Monitoring And Troubleshooting Practice Question
You need to inspect the live packet flow for a specific source IP address traversing the SRX device. Which utility can you use from the Junos CLI to capture packets on a specific interface with filtering 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
✓
monitor traffic interface <interface-name>
The monitor traffic interface command uses tcpdump-like syntax to capture and inspect live packets passing through a specified interface.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
traceoptions packet-capture
Why it's wrong here
There is no generic traceoptions packet-capture command.
- ✓
monitor traffic interface <interface-name>
Why this is correct
monitor traffic allows real-time packet capturing with matching filters on any Junos interface.
- ✗
show security flow packet-capture
Why it's wrong here
This command does not exist.
- ✗
ping diagnostic capture
Why it's wrong here
Ping is for connectivity testing, not general packet capture.
Visual reference
About these practice questions
This JNCIA-SEC question is part of Courseiva's 520-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.