JNCIA-SEC Security Policies Practice Question
Which THREE components are mandatory when defining a standard zone-based security policy rule in Junos OS? (Choose three.)
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
✓
Source zone
A standard Junos security policy requires a source zone, destination zone, match criteria (such as source address, destination address, and application), and a 'then' action.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Source zone
Why this is correct
Every zone-based policy requires a defined source zone.
- ✓
Destination zone
Why this is correct
Every zone-based policy requires a defined destination zone.
- ✗
A predefined security screen profile
Why it's wrong here
Security screens are applied at the zone level, not mandatory within security policies.
- ✓
Policy action (such as permit or deny)
Why this is correct
A policy must specify what action to take via the 'then' statement.
- ✗
Static NAT rule binding
Why it's wrong here
NAT is configured separately and is not mandatory for a security policy.
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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.