JNCIA-SEC Security Policies Practice Question
Which TWO actions occur when a packet matches a security policy configured with the 'reject' action? (Choose two.)
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 packet is dropped.
Reject drops the packet and generates an ICMP unreachable message back to the source.
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 packet is dropped.
Why this is correct
Correct. Rejected packets are dropped.
- ✗
A stateful session is created in the session table to track the rejection.
Why it's wrong here
Incorrect. Rejected traffic does not establish a persistent session.
- ✗
The session is placed into a persistent 'quarantine' VLAN.
Why it's wrong here
Incorrect. Junos security policies do not dynamically move traffic to quarantine VLANs via reject.
- ✓
An ICMP unreachable message is transmitted back to the packet source.
Why this is correct
Correct. ICMP unreachable is sent.
- ✗
The packet is forwarded to a secondary backup gateway using policy-based routing.
Why it's wrong here
Incorrect. Reject is a drop/deny action.
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.