Free Juniper JN0-231 Exam Actual Questions

The questions for JN0-231 were last updated On Apr 3, 2025

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Question No. 1

You want to verify the peer before IPsec tunnel establishment.

What would be used as a final check in this scenario?

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Correct Answer: D

The proxy ID is used as a final check to verify the peer before IPsec tunnel establishment. The proxy ID is a combination of local and remote subnet and protocol, and it is used to match the traffic that is to be encrypted. If the proxy IDs match between the two IPsec peers, the IPsec tunnel is established, and the traffic is encrypted.


Juniper Networks SRX Series Services Gateway IPsec Configuration Guide: https://www.juniper.net/documentation/en_US/release-independent/junos/topics/topic-map/security-ipsec-vpn-configuring.html

Question No. 2

What is the default timeout value for TCP sessions on an SRX Series device?

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Correct Answer: D

By default, TCP has a 30-minute idle timeout, and UDP has a 60-second idle timeout. Additionally, known IP protocols have a 30-minute timeout, whereas unknown ones have a 60-second timeout. Setting the inactivity timeout is very useful, particularly if you are concerned about applications either timing out or remaining idle for too long and filling up the session table. According to the Juniper SRX Series Services Guide, this can be configured using the 'timeout inactive' statement for the security policy.


Question No. 3

Click the Exhibit button.

You are asked to allow only ping and SSH access to the security policies shown in the exhibit.

Which statement will accomplish this task?

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Correct Answer: B

Question No. 4

Which two traffic types are considered exception traffic and require some form of special handling by the PFE? (Choose two.)

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Correct Answer: B, D

Question No. 5

You are asked to configure your SRX Series device to block all traffic from certain countries. The solution must be automatically updated as IP prefixes become allocated to those certain countries.

Which Juniper ATP solution will accomplish this task?

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Correct Answer: A

Juniper ATP Geo IP can help to accomplish this task by using geolocation services to determine the geographical location of IP addresses. As IP prefixes get allocated to the countries that you have specified, the Geo IP solution will automatically update the configured firewall policies to block any traffic that is coming from those specific countries.

This is a great solution for blocking specific countries - as it will allow for a more personalized and targeted approach to firewall policies - and thus, to increase the effectiveness of the solution at blocking potential malicious traffic.