JN0-231 : Security - Associate (JNCIA-SEC) Exam

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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?
1. GRE
2. L2TP
er: C
nation: IPsec (Internet Protocol Security) is specifically designed to provide authentication, ty, and confidentiality for data packets transmitted over an IP network, making it essential f ng VPN connections.
ion: 675
two statements regarding the use of security policies on Juniper SRX devices are important ng effective traffic control? (Choose two.)
urity policies must explicitly define both source and destination zones for effective traffic ement.
order of security policies is irrelevant; they are applied in a random manner.
icies can be configured to log all traffic, allowing for detailed monitoring and analysis. traffic is allowed by default unless explicitly denied by a security policy.
er: A, C
nation: Effective traffic control requires security policies to explicitly define source and desti
IPsec
3. SSL
Answ Expla
integri or
securi
Quest
Which for
ensuri
1. Sec manag
2. The
3. Pol
4. All Answ
Expla nation
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?
1. Configure the same static routes on both devices to ensure proper traffic flow.
2. Implement a default permit rule for all traffic in the security policies to allow VPN traffic.
3. Set up a dynamic routing protocol to automatically manage tunnel traffic.
4. Ensure both devices have matching IKE and IPsec settings, including encryption algorithms and lifetimes.
Answer: D
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.)
Quest
Which per
firewall
1. Pas
2. Ma
3. Sin
4. Tw
Answ
Expla only a
passw for
unauth
Quest
When c d
destin
1. Source NAT is used primarily for internal hosts to communicate with external networks.
2. Destination NAT is used to allow external hosts to initiate connections to internal services.
3. Both source and destination NAT can be configured simultaneously for the same traffic flow.
4. 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?
1. Traditional filtering is sufficient to protect against all types of attacks.
2. 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.
3. It s
Answ Expla
applic te,
thus p
Quest
In a Ju olicy?
1. To d
2. To a
3. To g
4. To r
Answ
Expla licy,
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.)
1. It requires dedicated physical hardware for optimal performance.
2. It can scale vertically by increasing resources on a single instance.
3. The vSRX can be deployed on various hypervisors, enhancing flexibility.
4. 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.
Question: 682
In the c or
detecti
1. Ap
2. Int
3. Sta
4. Be
Answ Expla
preven malous
activit
Quest
Which ose
two.)
1. Sig
2. Pas
3. Re
4. Ca
Answer: A, C
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?
1. show interfaces security
2. show configuration security policies
3. show security policies from-zone to-zone
4. show security zones
Answer: C
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.
er: A, C
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
on the
Quest
Which ntial
vulner
1. Dis
2. Ke
3. Re
4. All Answ
Expla minim vulner
Quest
During es in
Junos Space® Security Director. Which feature facilitates this correlation?
1. The "Event Correlation" engine that analyzes related events in context.
2. The "Log Aggregation" tool that combines logs from various sources.
3. The "Traffic Overview" that summarizes general traffic patterns.
4. The "Device Health" monitoring that focuses on device performance.
Answer: A
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
lled?
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.
er: A, C
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
contro
1. Ba
2. Net
3. Sta
4. Ap
Answ
Expla cted
and co
Quest
When c rect?
(Choo
1. Ap
2. Ap
3. Ap
4. Ap
Answ
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.)
1. It allows policies to be tied to user roles and identities.
2. It simplifies the configuration of network access controls.
3. It requires additional hardware to function effectively.
4. It can enhance security by enabling user-based logging.
5. 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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