JNCIA-SEC Junos OS Security Objects Practice Question
An administrator needs to ensure that packets with source routing options enabled are dropped before they enter the network through the untrusted zone. Which SCREEN option handles this?
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-route
The source route option in SCREEN profiles detects and blocks packets containing IP source routing headers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ip spoofing
Why it's wrong here
IP spoofing checks for source IPs matching local interfaces or martian addresses.
- ✗
land attack
Why it's wrong here
Land attack protection guards against packets where source and destination IP/ports are identical.
- ✗
tear-drop
Why it's wrong here
Tear-drop protection guards against overlapping IP fragment attacks.
- ✓
source-route
Why this is correct
The 'source-route' option drops packets that utilize IP source routing.
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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.