Juniper JN0-231 Questions & Answers

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Juniper

JN0-231

Security - Associate (JNCIA-SEC)

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Question: 674

When configuring a VPN on a Juniper SRX device, which protocol is primarily responsible for ensuring the authenticity and integrity of data packets during transmission between two endpoints?

Quest

Sec manag
The
Pol
All Answ

zones, and configuring policies to log all traffic is crucial for detailed monitoring and analysis of security events.

Question: 676

When configuring a Site-to-Site VPN in Junos, which of the following is a critical step that must be performed to ensure both ends of the tunnel can communicate securely?

Configure the same static routes on both devices to ensure proper traffic flow.
Implement a default permit rule for all traffic in the security policies to allow VPN traffic.
Set up a dynamic routing protocol to automatically manage tunnel traffic.
Ensure both devices have matching IKE and IPsec settings, including encryption algorithms and lifetimes.

Explanation: Ensuring that both devices have matching IKE and IPsec settings, including encryption algorithms and lifetimes, is critical for establishing a secure and functional Site-to-Site VPN.

ion: 677

authentication method provides the highest level of security for user access control in a Juni setup?

sword-based authentication chine-based authentication gle sign-on (SSO)

o-factor authentication er: D

nation: Two-factor authentication (2FA) adds an additional layer of security by requiring not ord but also a second factor, such as a mobile device or token, making it significantly harder orized access.

ion: 678

onfiguring NAT on a Juniper SRX device, which two statements regarding source NAT an ation NAT are accurate? (Choose two.)

Pas
Ma
Sin
Tw

Quest

Source NAT is used primarily for internal hosts to communicate with external networks.
Destination NAT is used to allow external hosts to initiate connections to internal services.
Both source and destination NAT can be configured simultaneously for the same traffic flow.
Source NAT modifies the destination address of packets leaving the network. Answer: A, B

Explanation: Source NAT is primarily used for allowing internal hosts to communicate with external networks, while destination NAT enables external hosts to connect to services hosted internally, facilitating bidirectional communication.

Question: 679

In the context of an application firewall, why is it important to implement application-layer filtering in addition to traditional network-layer filtering?

Traditional filtering is sufficient to protect against all types of attacks.
Application-layer filtering addresses threats that exploit vulnerabilities specific to applications, which network-layer filtering cannot adequately mitigate.
implifies the configuration of firewall rules.

er: B

nation: Application-layer filtering is crucial because it addresses threats that target specific ation vulnerabilities, which traditional network-layer filtering alone cannot adequately mitiga roviding a more comprehensive security approach.

ion: 680

niper SRX environment, what is the primary function of the "log" action within a security p eny all traffic that does not match the specified criteria
utomatically block malicious users from accessing the network enerate logs for traffic that matches the policy for future analysis edirect traffic to a different interface for monitoring

er: C

nation: The "log" action within a security policy generates logs for traffic that matches the po
Application-layer filtering is only necessary for web traffic.
It s

Quest

To d
To a
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providing valuable information for future analysis and helping to identify patterns or potential security incidents.

Question: 681

Which two aspects of the vSRX deployment make it suitable for cloud environments? (Choose two.)

It requires dedicated physical hardware for optimal performance.
It can scale vertically by increasing resources on a single instance.
The vSRX can be deployed on various hypervisors, enhancing flexibility.
It is limited to specific cloud providers for deployment. Answer: B, C

Explanation: The vSRX can scale vertically by increasing resources on a single instance, making it adaptable to varying loads. It also supports deployment on various hypervisors, providing flexibility in cloud environments.

ontext of Juniper's advanced threat prevention capabilities, which two features are critical f ng and mitigating malware and zero-day threats? (Choose two.)

plication Layer Gateways (ALGs) that modify application traffic in real-time.

egrated intrusion detection and prevention systems (IDPS) that analyze traffic patterns. tic signature databases that exclusively rely on known malware definitions.

havioral analysis tools that monitor for anomalous activities across the network. er: B, D

nation: Advanced threat prevention mechanisms rely on integrated intrusion detection and tion systems (IDPS) to analyze traffic patterns and behavioral analysis tools to identify ano ies, thus effectively detecting and mitigating malware and zero-day threats.

ion: 683

two functionalities of Juniper's IDPS are vital for detecting and responding to threats? (Cho

nature-based detection of known threats.

sive monitoring without any response capabilities. al-time alerts for suspicious activities.

pability to learn and adapt to new threats automatically.

Ap
Int
Sta
Be

Quest

Sig
Pas
Re
Ca

Explanation: The IDPS in Juniper devices utilizes signature-based detection to identify known threats and generates real-time alerts for suspicious activities. This proactive approach allows for timely responses to potential security incidents.

Question: 684

Which command would you use to verify the active security policies applied to an interface on a Juniper

SRX device, ensuring that you are examining the correct zone configuration?

show interfaces security
show configuration security policies
show security policies from-zone to-zone
show security zones

security policies applied between defined zones, providing clarity on how traffic is managed based security configuration.

ion: 685

two statements about Juniper's device hardening techniques are essential for mitigating pote abilities and securing the SRX devices? (Choose two.)

abling unnecessary services and protocols to reduce the attack surface. eping the default administrative credentials to simplify future access.

gularly updating the device firmware and software to patch known vulnerabilities. owing unrestricted access to management interfaces from any IP address.

nation: Device hardening techniques include disabling unnecessary services and protocols to ize the attack surface, as well as regularly updating firmware and software to patch known abilities, ensuring the security of SRX devices.

ion: 686

an analysis of security incidents, you want to correlate information from multiple log sourc

Explanation: The command show security policies from-zone to-zone allows you to check the specific

Quest

Dis
Ke
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All Answ

Expla minim vulner

Quest

Junos Space® Security Director. Which feature facilitates this correlation?

The "Event Correlation" engine that analyzes related events in context.
The "Log Aggregation" tool that combines logs from various sources.
The "Traffic Overview" that summarizes general traffic patterns.
The "Device Health" monitoring that focuses on device performance.

Explanation: The "Event Correlation" engine in Junos Space® Security Director facilitates the correlation of information from multiple log sources, analyzing related events in context to provide deeper insights into security incidents.

Question: 687

sic NAT configurations

work Address Translation (NAT) tic routing

plication Layer Gateway er: D

nation: Configuring an Application Layer Gateway ensures that all application traffic is inspe ntrolled, preventing unauthorized bypassing of the firewall and enhancing overall security.

ion: 688

onfiguring security policies, which statements about the role of application firewalls are cor se two.)

plication firewalls inspect traffic at the application layer to identify specific protocol misuse. plication firewalls can only protect against network layer attacks.

plication firewalls are designed to manage traffic for well-defined applications. plication firewalls operate independently of other security policies in place.

During a penetration test, it was discovered that certain application traffic was bypassing the Juniper SRX firewall. Which feature should be configured to ensure that all application traffic is inspected and

Ba
Net
Sta
Ap

Quest

Ap
Ap
Ap
Ap

Explanation: Application firewalls provide deep packet inspection at the application layer, allowing them to detect and mitigate specific application-level attacks while managing traffic for designated applications effectively.

Question: 689

What is the role of "User Identity" in Juniper's security policies, and how can it be leveraged? (Choose three.)

It allows policies to be tied to user roles and identities.
It simplifies the configuration of network access controls.
It requires additional hardware to function effectively.
It can enhance security by enabling user-based logging.
It is only applicable in VPN configurations. Answer: A, B, D

Explanation: User Identity allows for policies linked to user roles, simplifies access control configurations, and enhances security through detailed user-based logging, improving overall visibility.

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