JNCIA-SEC Junos OS Security Objects Practice Question
You are configuring a security zone and need to apply a SCREEN option to protect against IP spoofing attacks. Under which hierarchy level must you associate the SCREEN option profile in Junos OS?
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
✓
[edit security zones security-zone <zone-name> screen <profile-name>]
SCREEN options are applied under the security zones hierarchy to protect interfaces assigned to that zone.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
[edit security policies from-zone <zone> to-zone <zone> screen]
Why it's wrong here
Security policies control traffic forwarding, not screen attack detection placement.
- ✗
[edit interfaces <interface-name> screen <profile-name>]
Why it's wrong here
Screen options are not applied directly under the interface hierarchy in Junos OS.
- ✗
[edit security screen id spoofing]
Why it's wrong here
Screen options are defined under [edit security screen] and then referenced within zones.
- ✓
[edit security zones security-zone <zone-name> screen <profile-name>]
Why this is correct
Screen profiles are applied directly under the specific security zone configuration.
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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.