Security, Associate (JNCIA-SEC)

Here you have the best Juniper JN0-230 practice exam questions

  • You have 65 total questions across 13 pages (5 per page)
  • These questions were last updated on February 11, 2026
  • This site is not affiliated with or endorsed by Juniper.
Question 1 of 65
Which statement is correct about Junos security zones?
Answer

Suggested Answer

The suggested answer is B.

Logical interfaces are added to user-defined security zones. In Junos, user-defined security zones are collections of logical network segments to which interfaces can be assigned. Each security zone can contain one or more logical interfaces, which are the actual network interfaces used for traffic. Therefore, creating a user-defined security zone involves assigning logical interfaces to it, making option B the correct statement.

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Question 2 of 65
Which type of traffic is analyzed by an SRX Series device configured to use an antispam UTM policy?
Answer

Suggested Answer

The suggested answer is C.

An SRX Series device configured to use an antispam UTM policy primarily analyzes SMTP traffic. SMTP (Simple Mail Transfer Protocol) is the protocol used for sending email, which is where antispam measures are most relevant. While IMAP and POP3 are also used in email systems, they are protocols for retrieving email rather than sending it. HTTP, on the other hand, is not related to email traffic. Therefore, the correct answer is SMTP.

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Question 3 of 65
What is the definition of a zone on an SRX Series device?
Answer

Suggested Answer

The suggested answer is A.

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Question 4 of 65
Click the Exhibit button.
Exam JN0-230: Question 4 - Image 1
You have configured source NAT using an address pool as shown in the exhibit. Traffic is reaching the 203.0.113.6 server but return traffic is not being received by the SRX Series device.
Which feature must be configured to allow return traffic to be accepted by the SRX Series device?
Answer

Suggested Answer

The suggested answer is A.

The problem described involves return traffic not being received by the SRX Series device after a source NAT operation. This can occur when the router does not know how to reach the IP address of the NAT pool used. Proxy ARP resolves this by responding to ARP requests on behalf of the NAT addresses, allowing return traffic to be correctly routed to the SRX Series device. Thus, proxy ARP must be configured to allow the return traffic to be accepted.

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Question 5 of 65
Your company uses SRX Series devices to secure the edge of the network. You are asked to protect the company from ransomware attacks.
Which solution will satisfy this requirement?
Answer

Suggested Answer

The suggested answer is D.

Sky ATP (Advanced Threat Prevention) is a cloud-based service that provides advanced malware protection, including protection against ransomware. It uses machine learning and behavioral analysis to identify and block malicious activity before it can impact the network. Screens, unified security policies, and AppSecure are valuable for various security purposes but do not specifically focus on advanced threat detection and prevention like Sky ATP does.

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About the Juniper JN0-230 Certification Exam

About the Exam

The Juniper JN0-230 (Security, Associate (JNCIA-SEC)) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 65 practice questions across 13 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our JN0-230 questions are regularly updated to reflect the latest exam objectives.