JNCIA-SEC Content Security Practice Question
Which THREE parameters must be configured when setting up a DNSBL (DNS Black List) server profile for Antispam inspection on a Juniper SRX Series device? (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
✓
Server type (such as rbl or svbl)
Antispam DNSBL configuration on Junos requires specifying the server domain, server type, and reply codes that indicate spam.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Server type (such as rbl or svbl)
Why this is correct
Defining the server type specifies the protocol format expected.
- ✓
Server domain name or IP address
Why this is correct
The DNSBL server address is required to query the blacklist database.
- ✗
SMTP encryption certificate and private key
Why it's wrong here
Antispam inspection on SRX does not require SMTP server keys.
- ✓
Expected DNS reply code or threshold IP indicating spam
Why this is correct
The SRX checks the DNS query return value against configured threshold IPs to identify spam.
- ✗
POP3/IMAP proxy port numbers
Why it's wrong here
Antispam inspection focuses on SMTP traffic streams, not POP3/IMAP proxies.
About these practice questions
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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.