JNCIA-SEC Junos OS Security Objects Practice Question
An administrator configures an address book containing an IPv6 address prefix. How does Junos OS handle IPv6 addresses in security policies compared to IPv4?
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
✓
IPv6 addresses are supported within address books and can be used in security policies enforcing family inet6.
Junos security policies evaluate IPv6 addresses in address books similarly to IPv4, matching them against family inet6 traffic flows.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
IPv6 addresses must be placed in a separate IPv6-only address book stanza.
Why it's wrong here
IPv4 and IPv6 address objects can coexist within the same address book stanza.
- ✗
IPv6 address filtering requires AppSecure licenses because standard SRX flow only supports IPv4 addresses.
Why it's wrong here
IPv6 traffic and address objects are supported natively in base SRX forwarding modules.
- ✗
IPv6 addresses do not support address sets; they must be referenced individually in policies.
Why it's wrong here
Address sets support IPv6 address objects as well.
- ✓
IPv6 addresses are supported within address books and can be used in security policies enforcing family inet6.
Why this is correct
IPv6 addresses are fully supported inside standard address books for security policies.
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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.