JNCIS-SEC JN0-335最新問題集で2025年04月05日
2025年最新の問題をマスター！JNCIS-SEC合格目指そう！JN0-335リアル試験問題集！
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質問 # 96
Click the Exhibit button.
You are validating the configuration template for device access. The commands in the exhibit have been entered to secure IP access to an SRX Series device.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. The device manager can access the device from 192.168.11.248.
- B. The device manager can access the device from 10.253.1.2.
- C. The loopback interface blocks invalid traffic on its entry into the device.
- D. The loopback interface blocks invalid traffic on its exit from the device.
正解：B、C
解説：
The commands in the exhibit show how to configure a firewall filter on the loopback interface (lo0) of an SRX Series device. The loopback interface is a gateway for all the control traffic that enters the Routing Engine of the device. The firewall filter can be used to monitor and protect this control traffic from various attacks. Two statements that are true based on the exhibit are:
The loopback interface blocks invalid traffic on its entry into the device: The firewall filter applied on lo0 has a term that matches any packet with an invalid source address (such as 0.0.0.0/8 or 127.0.0.0/8) and discards it. This prevents spoofing or DoS attacks using invalid source addresses.
The device manager can access the device from 10.253.1.2: The firewall filter applied on lo0 has a term that matches any packet with a source address of 10.253.1.2 and accepts it. This allows the device manager to access the device from this IP address using protocols such as SSH, Telnet, HTTP, or HTTPS.
質問 # 97
You want to show tabular data for operational mode commands.
In this scenario, which logging parameter will provide this function?
- A. permit
- B. session-close
- C. count
- D. session-init
正解：C
解説：
Explanation
The count logging parameter displays the number of packets that match the firewall filter term in a tabular format. The count parameter also creates a counter that you can view with the show firewall command. The other logging parameters (permit, session-init, and session-close) do not show tabular data, but rather log the packets that match the term to a system log file or a user-specified file. References:
Understanding Firewall Filter Counters
Configuring Firewall Filter Counters
show firewall
質問 # 98
Which two statements describe the output shown in the exhibit? (Choose two.)
- A. Node 1 is passing traffic for redundancy group1.
- B. Redundancy group 1 experienced an operational failure.
- C. Redundancy group 1 was administratively failed over.
- D. Node 0 is passing traffic for redundancy group 1.
正解：A、C
質問 # 99
Your manager asks you to provide firewall and NAT services in a private cloud.
Which two solutions will fulfill the minimum requirements for this deployment? (Choose two.)
- A. a vSRX for firewall services and a separate vSRX for NAT services
- B. a cSRX for firewall services and a separate cSRX for NAT services
- C. a single vSRX
- D. a single cSRX
正解：C
解説：
Explanation
A vSRX is a virtualized security platform that runs on various hypervisors and cloud environments. It provides firewall and NAT services, as well as other security features, such as IPS, VPN, UTM, and AppSecure. A single vSRX can fulfill the minimum requirements for providing firewall and NAT services in a private cloud, as it can be deployed as a gateway or an edge device, and can scale up or down as needed. A vSRX can also interoperate with other Juniper and third-party products, such as Contrail Networking, Junos Space Security Director, and Sky ATP. A single vSRX is more cost-effective and simpler to manage than having separate vSRX instances for firewall and NAT services. A cSRX is a containerized version of vSRX that runs on Linux-based platforms. It provides similar security features as vSRX, but with a smaller footprint and faster deployment. However, a cSRX is not yet supported on all cloud environments, and it may have some limitations compared to vSRX, such as lower throughput and fewer interfaces. Therefore, a single cSRX may not be able to fulfill the minimum requirements for providing firewall and NAT services in a private cloud, depending on the specific cloud platform and the performance and scalability needs. A cSRX for firewall services and a separate cSRX for NAT services would also introduce more complexity and overhead than a single vSRX. References: vSRX Overview, cSRX Overview, JNCIP-SEC Certification
質問 # 100
Which statement about the control link in a chassis cluster is correct?
- A. The control messages sent over the link are encrypted by default.
- B. Recovering from a control link failure requires a reboot.
- C. A cluster can have redundant control links.
- D. The control link heartbeats contain the configuration file of the nodes.
正解：C
質問 # 101
What are two types of system logs that Junos generates? (Choose two.)
- A. SQL log files
- B. system core dump files
- C. data plane logs
- D. control plane logs
正解：C、D
解説：
The two types of system logs that Junos generates are control plane logs and data plane logs. Control plane logs are generated by the Junos operating system and contain system-level events such as system startup and shutdown, configuration changes, and system alarms. Data plane logs are generated by the network protocol processes and contain messages about the status of the network and its components, such as routing, firewall, NAT, and IPS. SQL log files and system core dump files are not types of system logs generated by Junos.
質問 # 102
You want to manually failover the primary Routing Engine in an SRX Series high availability cluster pair.
Which step is necessary to accomplish this task?
- A. Manually request the failover and identify the secondary node
- B. Adjust the priority in the configuration on the secondary node.
- C. Issue the set chassis cluster disable reboot command on the primary node.
- D. Implement the control link recover/ solution before adjusting the priorities.
正解：C
解説：
In order to manually failover the primary Routing Engine in an SRX Series high availability cluster pair, you must issue the command "set chassis cluster disable reboot" on the primary node. This command will disable the cluster and then reboot the primary node, causing the secondary node to take over as the primary node. This is discussed in greater detail in the Juniper Security, Specialist (JNCIS-SEC) Study Guide (page 68).
質問 # 103
What is the correct step sequence used when Sky ATP analyzes a file?
- A. cache lookup -> static analysis -> antivirus scanning -> dynamic analysis
- B. cache lookup -> antivirus scanning -> static analysis -> dynamic analysis
- C. dynamic analysis -> static analysis -> antivirus scanning -> cache lookup
- D. static analysis -> cache lookup -> antivirus scanning -> dynamic analysis
正解：B
解説：
https://www.juniper.net/documentation/en_US/release-independent/sky-atp/information- products/pathway-pages/sky-atp-admin-guide.pdf page 9
質問 # 104
You have deployed JSA and you need to view events and network activity that match rule criteria.
You must view this data using a single interface.
Which JSA feature should you use in this scenario?
- A. Assets
- B. Log Collector
- C. Network Activity
- D. Offense Manager
正解：C
質問 # 105
Which sequence does an SRX Series device use when implementing stateful session security policies using Layer 3 routes?
- A. An SRX Series device will conduct a longest-match Layer 3 route table lookup before performing a security policy search.
- B. An SRX Series device conducts an ALG security check on the longest-match route before performing a security policy search.
- C. An SRX Series device performs a security policy search before implementing an ALG security check on the longest-match Layer 3 route.
- D. An SRX Series device will perform a security policy search before conducting a longest-match Layer 3 route table lookup.
正解：A
質問 # 106
When a security policy is deleted, which statement is correct about the default behavior of active sessions allowed by that policy?
- A. The active sessions allowed by the policy will be marked as a legacy flow and will continue to be forwarded.
- B. The active sessions allowed by the policy will be dropped.
- C. The active sessions allowed by the policy will be reevaluated by the cached
- D. The active sessions allowed by the policy will continue
正解：B
解説：
When a security policy is deleted, the active sessions allowed by the policy will be dropped. The default behavior is that all active sessions allowed by the policy will be terminated and the traffic will no longer be forwarded. There is no way to mark the active sessions as a legacy flow or to reevaluate them by the cached rules.
Reference:
According to Juniper Networks Security, Specialist (JNCIS-SEC) Study Guide, when a security policy is deleted, the active sessions allowed by that policy will be dropped. This behavior is the default behavior of the device. There is no way to mark the active sessions as a legacy flow or to re-evaluate them against cached rules. The device will terminate the active sessions and will no longer forward traffic for those sessions.
質問 # 107
What is the correct step sequence used when Sky ATP analyzes a file?
- A. cache lookup -> static analysis -> antivirus scanning -> dynamic analysis
- B. cache lookup -> antivirus scanning -> static analysis -> dynamic analysis
- C. dynamic analysis -> static analysis -> antivirus scanning -> cache lookup
- D. static analysis -> cache lookup -> antivirus scanning -> dynamic analysis
正解：B
質問 # 108
Which two statements are true about the vSRX? (Choose two.)
- A. OpenStack is supported as a cloud orchestration solution.
- B. AWS is not supported as an laaS solution.
- C. AWS is supported as an laaS solution.
- D. OpenStack is not supported as a cloud orchestration solution.
正解：A、C
解説：
vSRX is a virtual firewall that runs as a software instance on a hypervisor or in a cloud environment. It provides the same features and functionality as the SRX Series physical firewalls, such as advanced security, secure SD-WAN, and robust networking. Two statements that are true about vSRX are:
AWS is supported as an IaaS solution: AWS (Amazon Web Services) is a cloud computing platform that provides on-demand services such as infrastructure, platform, software, and database as a service. vSRX is available on the AWS Marketplace and can be deployed and scaled in minutes to provide firewall protection for workloads running in AWS Virtual Private Clouds (VPCs), private clouds, or on-premises resources.
OpenStack is supported as a cloud orchestration solution: OpenStack is an open source software platform that enables users to create and manage cloud infrastructure and services. vSRX can be integrated with OpenStack using Heat templates or Contrail Service Orchestration to automate the provisioning and configuration of vSRX instances in an OpenStack environment.
質問 # 109
Which method does the loT Security feature use to identify traffic sourced from IoT devices?
- A. The SRX Series device streams transit traffic received from the IoT device to Juniper ATP Cloud.
- B. The SRX Series device streams metadata from the loT device transit traffic to Juniper ATP Cloud.
- C. The SRX Series device identifies loT devices using their MAC address.
- D. The SRX Series device identifies loT devices from metadata extracted from their transit traffic.
正解：B
解説：
SRX does not identify the iot device. It streams the metadata to Juniper ATP cloud and Junipe ATP cloud identifies the device.
https://www.juniper.net/documentation/us/en/software/junos/security-iot/topics/topic-map/security- iot-overview.html
質問 # 110
Which two statements about the DNS ALG are correct? (Choose two.)
- A. The DNS ALG does not support NAT.
- B. The DNS ALG supports DDNS.
- C. The DNS ALG performs DNS doctoring.
- D. The DNS ALG supports VPN tunnels.
正解：B、C
質問 # 111
You want to be alerted if the wrong password is used more than three times on a single device within five minutes.
Which Juniper Networks solution will accomplish this task?
- A. Juniper Identity Management Service
- B. Juniper Secure Analytics
- C. Intrusion Prevention System
- D. Adaptive Threat Profiling
正解：B
解説：
The Juniper Networks solution that will accomplish the task of alerting if the wrong password is used more than three times on a single device within five minutes is Juniper Secure Analytics (JSA). JSA is a security intelligence platform that collects, analyzes, and correlates network data from various sources, such as firewalls, routers, switches, servers, and applications. JSA can detect and respond to threats, anomalies, and vulnerabilities in real time using rules, offenses, reports, and dashboards. JSA can also integrate with JIMS (Juniper Identity Management Service) to obtain user identity information from Active Directory domains or syslog sources. JSA can use this information to create custom rules that trigger offenses or alerts based on user behavior or activity, such as failed login attempts or password changes.
質問 # 112
You want to control when cluster failovers occur.
In this scenario, which two specific parameters would you configure on an SRX Series device?
(Choose two.)
- A. heartbeat-threshold
- B. heartbeat-address
- C. heartbeat-interval
- D. heartbeat-tos
正解：A、C
質問 # 113
You are preparing a proposal for a new customer who has submitted the following requirements for a vSRX deployment:
-- globally distributed,
-- rapid provisioning,
-- scale based on demand,
-- and low CapEx.
Which solution satisfies these requirements?
- A. VMWare ESXi
- B. Network Director
- C. Juniper ATP Cloud
- D. AWS
正解：D
解説：
Explanation
vSRX is a virtual firewall that provides security and networking services at the perimeter or edge of virtualized environments1. vSRX can be deployed in various cloud environments, such as AWS, Azure, Google Cloud Platform, and VMware2.
AWS is a cloud computing platform that offers a variety of services, such as compute, storage, networking, security, and analytics3. AWS enables customers to deploy vSRX instances in a virtual private cloud (VPC), which is a logically isolated section of the AWS cloud4.
AWS satisfies the requirements for a vSRX deployment as follows:
Globally distributed: AWS has a global infrastructure that spans 25 geographic regions and 81 availability zones3. Customers can deploy vSRX instances in any region or zone that meets their needs and preferences4.
Rapid provisioning: AWS allows customers to launch vSRX instances in minutes using the AWS Marketplace, which is an online store that offers software products and solutions5. Customers can also use automation tools, such as CloudFormation, Terraform, and Ansible, to provision vSRX instances in a consistent and scalable manner.
Scale based on demand: AWS supports horizontal and vertical scaling of vSRX instances based on the changing traffic and performance demands. Customers can use AWS Auto Scaling, which is a service that automatically adjusts the number of vSRX instances, or AWS Elastic Load Balancing, which is a service that distributes the traffic across multiple vSRX instances.
Low CapEx: AWS operates on a pay-as-you-go model, which means that customers only pay for the resources they use, such as the vSRX instance type, the storage volume, the data transfer, and the license. Customers can also benefit from the AWS Free Tier, which offers a limited amount of free resources for 12 months.
References:
1: vSRX Overview | Junos OS | Juniper Networks
2: vSRX Deployment Guide | Junos OS | Juniper Networks
3: What is AWS? - Amazon Web Services
4: Configure an Amazon Virtual Private Cloud for vSRX Virtual Firewall | Junos OS | Juniper Networks
5: Juniper Networks vSRX - Amazon Web Services (AWS)
[6]: Deploying Juniper Security in AWS and Azure Education Services
[7]: Scaling vSRX Virtual Firewall Instances on AWS | Junos OS | Juniper Networks
[8]: Load Balancing vSRX Virtual Firewall Instances on AWS | Junos OS | Juniper Networks
[9]: Juniper Networks vSRX Pricing - Amazon Web Services (AWS)
[10]: AWS Free Tier - Amazon Web Services (AWS)
質問 # 114
Which statement describes the AppTrack module in AppSecure?
- A. The AppTrack module provides visibility and volumetric reporting of application usage on the network.
- B. The AppTrack module provides enforcement with the ability to block traffic, based on specific applications.
- C. The AppTrack module identifies the applications that are present in network traffic.
- D. The AppTrack module provides control by the routing of traffic, based on the application.
正解：C
質問 # 115
Your network uses a single JSA host and you want to implement a cluster. In this scenario, which two statements are correct? (Choose two.)
- A. The cluster virtual IP will need an unused IP address assigned.
- B. The primary and secondary hosts must be configured with the same storage devices.
- C. The software versions on both primary and secondary hosts
- D. The secondary host can backup multiple JSA primary hosts.
正解：A、C
解説：
According to the Juniper Networks JNCIP-SEC Study Guide, when setting up a cluster with a single JSA host, both the primary and secondary hosts must have the same software version installed. Additionally, an unused IP address must be assigned to the cluster virtual IP. The primary and secondary hosts do not need to be configured with the same storage devices, and the secondary host cannot be used to backup multiple JSA primary hosts.
質問 # 116
Which two statements are correct about the configuration shown in the exhibit? (Choose two.)
- A. Every session that enters the SRX Series device will generate an event
- B. Replacing the session-init parameter with session-lose will log unidentified flows.
- C. The session-class parameter in only used when troubleshooting.
- D. The others 300 parameter means unidentified traffic flows will be dropped in 300 milliseconds.
正解：A、D
解説：
The configuration shown in the exhibit is for a Juniper SRX Series firewall. The session-init parameter is used to control how the firewall processes unknown traffic flows. With the session- init parameter set to 300, any traffic flows that the firewall does not recognize will be dropped after 300 milliseconds. Additionally, every session that enters the device, whether it is known or unknown, will generate an event, which can be used for logging and troubleshooting purposes.
The session-lose parameter is used to control how the firewall handles established sessions that are terminated.
質問 # 117
Your JIMS server is unable to view event logs.
Which two actions would you take to solve this issue? (Choose two.)
- A. Enable the correct host-inbound-traffic rules on the SRX Series devices.
- B. Enable remote event log management within Windows Firewall on the JIMS server.
- C. Enable remote event log management within Windows Firewall on the necessary domain controllers.
- D. Enable remote event log management within Windows Firewall on the necessary Exchange servers.
正解：C、D
質問 # 118
Regarding static attack object groups, which two statements are true? (Choose two.)
- A. Matching attack objects are automatically added to a custom group.
- B. You must manually add matching attack objects to a custom group.
- C. Group membership automatically changes when Juniper updates the IPS signature database.
- D. Group membership does not automatically change when Juniper updates the IPS signature database.
正解：C、D
解説：
static attack object groups are predefined groups of attack objects that are included in Juniper's IPS signature database. These groups do not change automatically when Juniper updates the database2.
質問 # 119
Which two statements are correct about JSA data collection? (Choose two.)
- A. The Event Collector parses logs
- B. The Flow Collector can use statistical sampling
- C. The Flow Collector parses logs.
- D. The Event Collector collects information using BGP FlowSpec.
正解：A、B
解説：
Explanation
Juniper Secure Analytics (JSA) is a security information and event management (SIEM) system that consolidates, analyzes, and manages surveillance data from network devices, endpoints, and applications. JSA uses two types of data collectors: Event Collector and Flow Collector1 The Event Collector collects and parses logs from various log sources, such as firewalls, routers, servers, and intrusion detection or prevention systems. The Event Collector normalizes the log data into a common format and sends it to the JSA console for further analysis and correlation. The Event Collector supports different protocols for log collection, such as syslog, SNMP, JDBC, and SDEE12 The Flow Collector collects and processes network traffic data from various flow sources, such as Flowlog files, NetFlow, J-Flow, sFlow, and Packeteer. The Flow Collector enriches the flow data with additional information, such as application identification, geolocation, and threat intelligence. The Flow Collector sends the flow data to the JSA console for further analysis and correlation. The Flow Collector can use statistical sampling to reduce the amount of flow data that is collected and processed, which can improve the performance and scalability of the system12 The Event Collector does not collect information using BGP FlowSpec, which is a protocol that allows the distribution of traffic flow specification rules among BGP peers. BGP FlowSpec is not a supported flow source for JSA3 The Flow Collector does not parse logs, which are textual records of network activity generated by log sources. The Flow Collector only handles flow data, which are binary records of network traffic generated by flow sources12 References: 1: Data Collection | JSA 7.5.0 | Juniper Networks 2: Data Collection - TechLibrary - Juniper Networks 3: Understanding BGP FlowSpec - TechLibrary - Juniper Networks
質問 # 120
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