[Apr-2026] Exam Sure Pass Juniper Certification with JN0-336 exam questions
Real Juniper JN0-336 Exam Questions Study Guide
NEW QUESTION # 62
Which two statements about SRX Series device chassis clusters are correct? (Choose two.)
- A. The chassis cluster can contain a maximum of two devices.
- B. The chassis cluster data plane is connected with revenue ports.
- C. The chassis cluster data plane is connected with SPC ports.
- D. The chassis cluster can contain a maximum of three devices.
Answer: A,B
Explanation:
Two statements that are correct about SRX Series device chassis clusters are:
The chassis cluster data plane is connected with revenue ports: A chassis cluster is a high-availability feature that groups two identical SRX Series devices into a cluster that acts as a single device. The cluster has two types of links: control links and fabric links. The control links are used for exchanging heartbeat messages and configuration synchronization between the nodes. The fabric links are used for forwarding data traffic between the nodes. The fabric links are connected with revenue ports, which are regular Ethernet interfaces that can also be used for normal traffic when not in cluster mode.
The chassis cluster can contain a maximum of two devices: A chassis cluster can only consist of two nodes: node 0 and node 1. The nodes must be the same model, have the same hardware configuration, run the same software version, and have the same license keys. The nodes share a common configuration and act as backup for each other in case of failure.
Reference: = Configuring Chassis Clustering on SRX Series Devices, SRX Series Chassis Cluster Configuration Overview, Connecting SRX Series Firewalls to Create a Chassis Cluster
NEW QUESTION # 63
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.
Answer: A
Explanation:
The sequence that an SRX Series device uses when implementing stateful session security policies using Layer 3 routes is:
An SRX Series device will conduct a longest-match Layer 3 route table lookup before performing a security policy search: When an SRX Series device receives a packet, it first looks up the destination IP address in the routing table and finds the longest matching route to forward the packet. Then, it performs a security policy search based on the source zone, destination zone, source address, destination address, protocol, and application of the packet. If there is a matching policy that allows the packet, it creates or updates a session entry for the packet and applies any security services configured in the policy.
Reference: = [Security Policies Overview], [Security Policy Processing Overview]
NEW QUESTION # 64
Which two statements are correct about SSL proxy server protection? (Choose two.)
- A. You must import the root CA on the servers.
- B. The servers must be configured to use the SSL proxy function on the SRX Series device.
- C. You must load the server certificates on the SRX Series device.
- D. You do not need to configure the servers to use the SSL proxy the function on the SRX Series device.
Answer: C,D
Explanation:
When using SSL proxy, the servers themselves do not require any special configuration to utilize the SSL proxy function on the SRX device. The SSL proxy operates transparently, intercepting and decrypting SSL/TLS traffic before it reaches the servers.
For the SSL proxy to function effectively, especially in server protection mode where it impersonates the server to the client, it is necessary to load the server's certificates onto the SRX device. This allows the SRX to establish a trusted connection with the client using the server's credentials.
NEW QUESTION # 65
You administer a JSA host and want to include a rule that sets a threshold for excessive firewall denies and sends an SNMP trap after receiving related syslog messages from an SRX Series firewall.
Which JSA rule type satisfies this requirement?
- A. flow
- B. event
- C. common
- D. offense
Answer: D
Explanation:
An offense rule in JSA is designed to aggregate multiple events or log entries based on specified criteria into a single offense, which can then trigger responses such as notifications or actions like sending an SNMP trap. This type of rule is well-suited for scenarios where you need to monitor for patterns or rates of events, such as excessive firewall denies, and take action when these exceed defined thresholds.
Offense rules can analyze both event and flow data, making them highly versatile for comprehensive security monitoring.
NEW QUESTION # 66
Your JIMS server is unable to view event logs.
Which two actions would you take to solve this issue? (Choose two.)
- A. Enable remote event log management within Windows Firewall on the necessary domain controllers.
- B. Enable remote event log management within Windows Firewall on the necessary Exchange servers.
- C. Enable the correct host-inbound-traffic rules on the SRX Series devices.
- D. Enable remote event log management within Windows Firewall on the JIMS server.
Answer: A,D
Explanation:
JIMS needs to access the event logs from domain controllers to function properly, as it relies on these logs to track user and device activity across the network. If the Windows Firewall on the domain controllers is blocking this access, enabling remote event log management will allow JIMS to retrieve the necessary information.
While it's less common, ensuring that any firewall settings on the JIMS server itself do not block outgoing requests or responses related to event log management is also crucial. This ensures that JIMS can send out requests and receive responses without any hindrance from its own firewall.
NEW QUESTION # 67
What are three capabilities of AppQoS? (Choose three.)
- A. reserve bandwidth
- B. re-write DSCP values
- C. assign a forwarding class
- D. re-write the TTL
- E. rate-limit traffic
Answer: B,C,E
Explanation:
AppQoS can modify the DSCP (Differentiated Services Code Point) values in IP packet headers. This is crucial for defining the level of service for each packet, influencing how network devices prioritize traffic.
It can assign traffic to specific forwarding classes. This feature allows network administrators to group different types of traffic (e.g., VoIP, streaming, bulk data) into categories that are treated differently based on predefined network policies, ensuring that critical applications receive the necessary bandwidth and priority.
AppQoS is capable of rate-limiting traffic, which involves setting a maximum bandwidth limit for certain types of traffic. This ensures that no single application or service consumes more bandwidth than allocated, thus preventing network congestion and ensuring fair bandwidth distribution among all applications.
These features are essential for managing network performance and ensuring that critical applications receive the necessary resources to function effectively. AppQoS does not inherently include capabilities to re-write TTL (Time To Live) values or reserve bandwidth as primary functions, but it manages bandwidth usage through rate limiting and priority settings.
NEW QUESTION # 68
You need to deploy an SRX Series device in your virtual environment. In this scenario, what are two benefits of using a CSRX? (Choose two.)
- A. The cSRX supports Layer 2 and Layer 3 deployments.
- B. The cSRX has low memory requirements.
- C. The cSRX supports firewall, NAT, IPS, and UTM services.
- D. The cSRX default configuration contains three default zones: trust, untrust, and management.
Answer: B,C
Explanation:
Two benefits of using a cSRX in your virtual environment are:
The cSRX supports firewall, NAT, IPS, and UTM services: The cSRX is a containerized version of the SRX Series firewall that runs as a Docker container on Linux hosts. It provides the same features and functionality as the SRX Series physical firewalls, such as firewall, NAT, IPS, and UTM services. The cSRX can protect your virtual workloads and applications from various threats and attacks.
The cSRX has low memory requirements: The cSRX is designed to be lightweight and efficient, with low memory and CPU requirements. The cSRX can run on as little as 1 GB of RAM and 1 vCPU, making it suitable for resource-constrained environments. Reference: = cSRX Overview, cSRX Container Firewall Datasheet
NEW QUESTION # 69
You want to deploy a virtualized SRX in your environment.
In this scenario, why would you use a vSRX instead of a cSRX? (Choose two.)
- A. The vSRX supports Layer 2 and Layer 3 configurations.
- B. Only the vSRX provides clustering.
- C. The vSRX has faster boot times.
- D. Only the vSRX provides NAT, IPS, and UTM services
Answer: A,B
Explanation:
vSRX provides flexible networking capabilities which include support for both Layer 2 (data link) and Layer 3 (network) configurations. This allows it to handle a variety of routing and switching tasks within virtual environments.
Clustering capability, which involves grouping multiple vSRX instances to operate as a single entity for redundancy and high availability, is a feature specific to vSRX. This is critical in environments where continuous uptime and resilience are required.
NEW QUESTION # 70
Exhibit
Referring to the exhibit which statement is true?
- A. SSL proxy leverages post-match results.
- B. SSL proxy leverages pre-match result
- C. SSL proxy functions will ignore the session.
- D. SSL proxy must wait for return traffic for the final match to occur.
Answer: D
NEW QUESTION # 71
Which statement defines the function of an Application Layer Gateway (ALG)?
- A. The ALG uses software processes for permitting or disallowing specific IP address ranges.
- B. The ALG uses software that is used by a single TCP session using the same port numbers as the application.
- C. The ALG contains protocols that use one application session for each TCP session.
- D. The ALG uses software processes for managing specific protocols.
Answer: D
Explanation:
The statement that defines the function of an Application Layer Gateway (ALG) is: The ALG uses software processes for managing specific protocols. An ALG is a security component that operates at the application layer (layer 7) of the OSI model and handles data associated with certain application protocols, such as SIP, FTP, RTSP, etc. An ALG acts as a proxy or intermediary between the client and the server applications and performs various functions, such as address and port translation, resource allocation, application response control, and synchronization of data and control traffic. An ALG can also inspect and modify the application payload to enable firewall or NAT traversal, prevent spoofing or DoS attacks, or enforce granular security policies based on application-specific commands. Reference: = Application-level gateway - Wikipedia, What Is an Application Layer Gateway (ALG)? | F5, What is ALG
** Application Layer Gateway | 3CX
NEW QUESTION # 72
Which two statements are true about the fab interface in a chassis cluster? (Choose two.)
- A. The Junos OS supports only one fab link.
- B. The fab link supports traditional interface features.
- C. The fab link does not support fragmentation.
- D. The physical interface for the fab link must be specified in the configuration.
Answer: C,D
Explanation:
The fabric link, used for data traffic synchronization between cluster nodes, is designed to handle packets at full size. It does not support packet fragmentation, which means that packets should be sized appropriately to avoid issues related to packet size limitations on the fab interface.
For chassis clustering, the specific physical interfaces used as fabric links (fab links) must be explicitly defined in the configuration. This specification is crucial to ensure proper data flow between nodes for state synchronization and other clustering functions.
NEW QUESTION # 73
Exhibit
Using the information from the exhibit, which statement is correct?
- A. Redundancy group 0 is in an ineligible state.
- B. Redundancy group 1 is in an ineligible state.
- C. Node1 is the active node for the control plane
- D. There are no issues with the cluster.
Answer: D
NEW QUESTION # 74
You have implemented a vSRX in your VMware environment. You want to implement a second vSRX Series device and enable chassis clustering.
Which two statements are correct in this scenario about the control-link settings? (Choose two.)
- A. In the vSwitch properties settings, set the VLAN ID to None.
- B. In the vSwitch security settings, reject MAC address changes.
- C. In the vSwitch security settings, accept promiscuous mode.
- D. In the vSwitch security settings, reject forged transmits.
Answer: B,C
NEW QUESTION # 75
Exhibit
You are asked to track BitTorrent traffic on your network. You need to automatically add the workstations to the High_Risk_Workstations feed and the servers to the BitTorrent_Servers feed automatically to help mitigate future threats.
Which two commands would add this functionality to the FindThreat policy? (Choose two.)
- A.
- B.
- C.
- D.
Answer: A,B
NEW QUESTION # 76
Click the Exhibit button.
Referring to the exhibit, what will the SRX Series device do in this configuration?
- A. Packets from the infected hosts with a threat level of 8 or above will be dropped and no log message will be generated.
- B. Packets from the infected hosts with a threat level of 8 or above will be dropped and a log message will be generated.
- C. Packets from the infected hosts with a threat level of 8 will be dropped and a log message will be generated.
- D. Packets from the infected hosts with a threat level of 8 will be dropped and no log message will be generated.
Answer: A
Explanation:
The exhibit shows a configuration snippet for security intelligence on an SRX Series device. Security intelligence is a feature that allows you to block or monitor traffic from malicious sources based on threat intelligence feeds from Juniper ATP Cloud or other providers. The configuration defines a profile for ATP Infected-Hosts, which is a feed that contains IP addresses of hosts that are infected with malware and communicate with command-and-control servers. The configuration also defines a rule for threat level 8, which is a parameter that indicates the severity of the threat.
Based on this configuration, the SRX Series device will do the following:
Packets from the infected hosts with a threat level of 8 or above will be dropped: The action block-and- drop under the rule means that the device will block any traffic from the infected hosts that have a threat level equal to or higher than 8. This will prevent the hosts from sending or receiving malicious commands or data.
No log message will be generated: The absence of any log option under the rule means that the device will not generate any log message for the blocked traffic. This may reduce the load on the device and the logging server, but it may also limit the visibility and analysis of the security events. Reference: = Security Intelligence Theory, Firewall Filter Support on Loopback Interface
NEW QUESTION # 77
Which two statements are correct about a reth LAG? (Choose two.)
- A. Links must use the same cable type
- B. You should have two or more interfaces.
- C. Links must have the same speed and duplex setting.
- D. You must have a "minimum-links" statement value of two.
Answer: B,C
Explanation:
A reth LAG is a redundant Ethernet link aggregation group that combines multiple physical interfaces into a single logical interface in a chassis cluster. A reth LAG provides load balancing and redundancy for traffic within or between redundancy groups. Two statements that are correct about a reth LAG are:
Links must have the same speed and duplex setting: To form a reth LAG, the physical interfaces must have the same speed and duplex setting. This ensures that the links can operate at the same capacity and avoid performance issues or errors.
You should have two or more interfaces: To create a reth LAG, you need to have at least two physical interfaces. One interface should be connected to node 0 and the other interface should be connected to node 1. You can also have more than two interfaces in a reth LAG for increased bandwidth and redundancy.
Reference: = Configuring Redundant Ethernet Interfaces, [Understanding Redundant Ethernet Interfaces]
NEW QUESTION # 78
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. Juniper ATP Cloud
- B. Network Director
- C. AWS
- D. VMWare ESXi
Answer: C
Explanation:
The solution that satisfies the requirements for a vSRX deployment is AWS. AWS (Amazon Web Services) is a cloud computing platform that provides on-demand services such as infrastructure, platform, software, and database as a service. AWS is globally distributed, meaning that it has data centers in multiple regions around the world. AWS also allows rapid provisioning, meaning that you can launch vSRX instances in minutes using preconfigured Amazon Machine Images (AMIs) or custom templates. AWS also enables scaling based on demand, meaning that you can adjust the number and size of vSRX instances according to your network traffic and performance needs. AWS also has low CapEx (capital expenditure), meaning that you only pay for what you use and do not need to invest in hardware or maintenance costs.
Reference: = vSRX Deployment Guide for AWS, Understand vSRX Virtual Firewall with AWS, What Is Amazon Web Services?
NEW QUESTION # 79
Which statement regarding Juniper Identity Management Service (JIMS) domain PC probes is true?
- A. JIMS domain PC probes analyze domain controller security event logs at60-mmute intervals by default.
- B. JIMS domain PC probes are triggered if no username to IP address mapping is found in the domain security event log.
- C. JIMS domain PC probes are initiated by an SRX Series device to verify authentication table information.
- D. JIMS domain PC probes are triggered to map usernames to group membership information.
Answer: B
Explanation:
Juniper Identity Management Service (JIMS) domain PC probes are used to map usernames to IP addresses in the domain security event log. This allows for the SRX Series device to verify authentication table information, such as group membership. The probes are triggered whenever a username to IP address mapping is not found in the domain security event log. By default, the probes are executed at 60-minute intervals.
NEW QUESTION # 80
Which two statements about SRX chassis clustering are correct? (Choose two.)
- A. SRX chassis clustering supports active/passive and active/active for the data plane.
- B. SRX chassis clustering supports active/passive for the control plane.
- C. SRX chassis clustering supports active/active for the control plane.
- D. SRX chassis clustering only supports active/passive for the data plane.
Answer: A,B
Explanation:
SRX chassis clustering allows for both active/passive and active/active configurations for the data plane.
In an active/passive setup, one node is active (handling traffic) while the other remains passive (idle and waiting to take over in case of failure). In an active/active setup, both nodes can handle traffic simultaneously, distributing different traffic flows or services between them for load balancing and redundancy.
For the control plane, SRX chassis clustering typically operates in an active/passive mode. This means one node actively handles the control plane responsibilities, such as managing routing tables and maintaining sessions, while the other stands by ready to take over these tasks if the active node fails.
NEW QUESTION # 81
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 loopback interface blocks invalid traffic on its exit from the device.
- B. The loopback interface blocks invalid traffic on its entry into the device.
- C. The device manager can access the device from 10.253.1.2.
- D. The device manager can access the device from 192.168.11.248.
Answer: B,C
Explanation:
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.
Reference: = Firewall Filter Support on Loopback Interface, [MX/SRX] The behavior of firewall filters that are applied on the loopback interfaces in virtual routers
NEW QUESTION # 82
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