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Juniper JN0-231 Exam Questions
- Topic 1: SRX Series Devices: In this topic, Juniper networking professionals explore the core concepts and features of SRX Series devices. The discussion includes firewalling, routing integration, and high-performance security to prepare candidates for practical applications in enterprise environments.
- Topic 2: Junos Security Objects: This topic familiarizes Juniper networking professionals with the structure and functionality of security zones, screens, addresses, and services objects. Understanding these components helps ensure proper segmentation and effective threat prevention strategies.
- Topic 3: Security Policies: Juniper networking professionals will examine the concepts, operational mechanisms, and benefits of security policies. The topic emphasizes rule-based controls for traffic management, ensuring compliance with organizational security requirements.
- Topic 4: Juniper Advanced Threat Protection: This topic introduces Juniper networking professionals to Juniper ATP Cloud concepts, highlighting its role in detecting advanced threats and offering benefits like automated mitigation and extended threat intelligence for enhanced security operations.
- Topic 5: Network Address Translation: In this section, Juniper networking professionals learn about Network Address Translation (NAT), its operational models, and benefits. Key focus areas include address preservation, network security, and flexibility in accessing external resources securely.
- Topic 6: IPsec: This topic helps Juniper networking professionals understand the core concepts and advantages of IPsec VPNs, focusing on secure communication over untrusted networks. Concepts include encryption, authentication, and integrity checks.
- Topic 7: Unified Threat Management: Unified Threat Management (UTM) is explored in this topic, allowing Juniper networking professionals to understand its components, benefits, and operations, such as antivirus, anti-spam, and web filtering for comprehensive security.
- Topic 8: Monitoring, Reporting, and Troubleshooting: Juniper networking professionals gain insight into the methodologies for monitoring, reporting, and logging within Juniper security solutions. This ensures efficient problem resolution and proactive security management to meet enterprise demands.
Free Juniper JN0-231 Exam Actual Questions
Note: Premium Questions for JN0-231 were last updated On Jan. 27, 2025 (see below)
What is the default timeout value for TCP sessions on an SRX Series device?
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.
An application firewall processes the first packet in a session for which the application has not yet been identified.
In this scenario, which action does the application firewall take on the packet?
This is necessary to ensure that the application firewall can properly identify the application and the correct security policies can be applied before allowing any traffic to pass through.
If the first packet was allowed to pass without first being identified, then the application firewall would not know which security policies to apply - and this could potentially lead to security vulnerabilities or breaches. So it's important that the first packet is held until the application is identified.
What is the default timeout value for TCP sessions on an SRX Series device?
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.
Which two non-configurable zones exist by default on an SRX Series device? (Choose two.)
Junos-host and null are two non-configurable zones that exist by default on an SRX Series device. Junos-host is the default zone for all internal interfaces and services, such as management and other loopback interfaces. The null zone is used to accept all traffic that is not explicitly accepted by other security policies, and is the default zone for all unclassified traffic. Both zones cannot be modified or deleted.
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