Pass Your JN0-637 Exam Easily - Real JN0-637 Practice Dump Updated Feb 05, 2026
2026 Realistic Verified Free Juniper JN0-637 Exam Questions
NEW QUESTION # 67
Exhibit:
The security trace options configuration shown in the exhibit is committed to your SRX series firewall.
Which two statements are correct in this Scenario? (Choose Two)
- A. The file debugger will be readable by all users.
- B. Once the trace has generated 10 log files, older logs will be overwritten.
- C. Once the trace has generated 10 log files, the trace process will halt.
- D. The file debugger will be readable only by the user who committed this configuration
Answer: B,C
Explanation:
Once the trace has generated 10 log files, older logs will be overwritten. - This is generally true if the configuration includes a file count limit and the 'world-readable' flag. Without the 'world-readable' flag, only the file's owner or superuser can read the file. If the 'no-world-readable' flag is set, only the user that created the file and root can read it.
Once the trace has generated 10 log files, the trace process will halt. - This would be true only if the 'files' statement is used without the 'world-readable' or 'no-world-readable' flag. If 'no-world-readable' is set, the trace files are not readable by all users.
NEW QUESTION # 68
You want to bypass IDP for traffic destined to social media sites using APBR, but it is not working and IDP is dropping the session.
What are two reasons for this problem? (Choose two.)
- A. IDP disable is not configured on the APBR rule.
- B. The application services bypass is not configured on the APBR rule.
- C. The APBR rule does a match on the first packet.
- D. The session did not properly reclassify midstream to the correct APBR rule.
Answer: B,D
Explanation:
* Explanation of Answer A (Session Reclassification):
* APBR (Advanced Policy-Based Routing) requires the session to be classified based on the specified rule, which can change midstream as additional packets are processed. If the session was already established before the APBR rule took effect, the traffic may not be correctly reclassified to match the new APBR rule, leading to IDP (Intrusion Detection and Prevention) processing instead of being bypassed. This can occur especially when the session was already established before the rule change.
* Explanation of Answer C (Application Services Bypass):
* For APBR to work and bypass the IDP service, theapplication services bypassmust be explicitly configured. Without this configuration, the APBR rule may redirect the traffic, but the IDP service will still inspect and potentially drop the traffic. This is especially important for traffic destined for specific sites like social media platforms where bypassing IDP is desired.
Example configuration for bypassing IDP services:
bash
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set security forwarding-options advanced-policy-based-routing profile <profile-name> application-services- bypass Step-by-Step Resolution:
* Reclassify the Session Midstream:
* If the traffic was already being processed before the APBR rule was applied, ensure that the session is reclassified by terminating the current session or ensuring the APBR rule is applied from the start.
Command to clear the session:
bash
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clear security flow session destination-prefix <ip-address>
* Configure Application Services Bypass:
* Ensure that the APBR rule includes the application services bypass configuration to properly bypass IDP or any other security services for traffic that should not be inspected.
Example configuration:
bash
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set security forwarding-options advanced-policy-based-routing profile <profile-name> application-services- bypass Juniper Security Reference:
* Session Reclassification in APBR: APBR requires reclassification of sessions in real-time to ensure midstream packets are processed by the correct rule. This is crucial when policies change dynamically or new rules are added.
* Application Services Bypass in APBR: This feature ensures that security services such as IDP are bypassed for traffic that matches specific APBR rules. This is essential for applications where performance is a priority and security inspection is not necessary.
NEW QUESTION # 69
While troubleshooting security policies, you added the count action.
Where do you see the result of this action?
- A. In the show security policies hit-count command output.
- B. In the show security policies detail command output.
- C. In the show security flow statistics command output.
- D. In the show firewall log command output.
Answer: B
NEW QUESTION # 70
You have deployed an SRX Series device at your network edge to secure Internet-bound sessions for your local hosts using source NAT. You want to ensure that your users are able to interact with applications on the Internet that require more than one TCP session for the same application session.
Which two features would satisfy this requirement? (Choose two.)
- A. address persistence
- B. persistent NAT
- C. STUN
- D. double NAT
Answer: A,B
Explanation:
Address persistence ensures that the same NAT IP address is used for all sessions originating from a single source IP. Persistent NAT maintains connections for applications needing multiple sessions, like VoIP.
Additional details are available in Juniper NAT Documentation.
For applications that require multiple TCP sessions for the same application session (such as VoIP or certain online games), the SRX device needs to handle NAT properly to maintain session continuity. Here's what helps:
* Address Persistence (Answer A): Address persistence ensures that multiple sessions initiated by the same internal host are mapped to the same external IP address. This is crucial for applications that use multiple TCP sessions to maintain a stateful connection with the external server.
Command Example:
bash
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set security nat source persistent-nat address-persistence
* Persistent NAT (Answer C): This feature allows the external server to initiate new connections to the internal client using the same NAT translation. It's essential for applications that require consistent NAT mappings across multiple sessions.
Command Example:
bash
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set security nat source persistent-nat permit target-host-port
These features ensure that applications with multiple TCP sessions work seamlessly across NAT.
NEW QUESTION # 71
You need to set up source NAT so that external hosts can initiate connections to an internal device, but only if a connection to the device was first initiated by the internal device.
Which type of NAT solution provides this functionality?
- A. Persistent NAT with any remote host
- B. Address persistence
- C. Static NAT
- D. Persistent NAT with target host
Answer: D
Explanation:
Persistent NAT with target host allows external hosts to establish connections only when the internal device initiates a session first, ideal for specific interactive applications. Refer to Juniper Persistent NAT Documentation.
The scenario requires that external hosts be able to initiate a connectiononly if the internal device has already initiated a connection. The correct solution isPersistent NAT with target host, which ensures that a specific external host can initiate new connections back to the internal device, but only after the internal device has established a session first.
* Persistent NAT with Target Host (Answer C): This allows the internal device to initiate a connection, and once established, the specified external host can also initiate new connections to the internal device on the same NAT mapping.
Example Configuration:
bash
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set security nat source persistent-nat permit target-host-port
This solution is appropriate when controlled bidirectional communication is required based on an internal- initiated connection.
NEW QUESTION # 72
A user reports that a specific application is not working properly. This application makes multiple connection to the server and must have the same address every time from a pool and this behavior needs to be changed.
What would solve this problem?
- A. Use the persistent-nat parameter.
- B. Use STUN.
- C. Use the address-persistent parameter.
- D. Use DNS doctoring.
Answer: A
NEW QUESTION # 73
Exhibit:
Referring to the exhibit, which technology would you use to provide communication between IPv4 host1 and ipv4 internal host
- A. full cone NAT
- B. NAT46
- C. DS-Lite
- D. NAT444
Answer: C
NEW QUESTION # 74
Exhibit:
You have deployed an SRX Series device as shown in the exhibit. The devices in the Local zone have recently been added, but their SRX interfaces have not been configured. You must configure the SRX to meet the following requirements:
* Devices in the 10.1.1.0/24 network can communicate with other devices in the same network but not with other networks or the SRX.
* You must be able to apply security policies to traffic flows between devices in the Local zone.
Which three configuration elements will be required as part of your configuration? (Choose three.)
- A. set protocols l2-learning global-mode transparent-bridge
- B. set security zones security-zone Local interfaces irb.10
- C. set protocols l2-learning global-mode switching
- D. set interfaces ge-0/0/1 unit 0 family ethernet-switching vlan-members 10
- E. set security zones security-zone Local interfaces ge-0/0/1.0
Answer: A,D,E
Explanation:
In this scenario, we need to configure the SRX Series device so that devices in the Local zone (VLAN 10,
10.1.1.0/24 network) can communicate with each other but not with other networks or the SRX itself.
Additionally, you must be able to apply security policies to traffic flows between the devices in the Local zone.
* Explanation of Answer A (Assigning Interface to Security Zone):
* You need to assign the interface ge-0/0/1.0 to the Local security zone. This is crucial because the SRX only applies security policies to interfaces assigned to security zones. Without this, traffic between devices in the Local zone won't be processed by security policies.
* Configuration:
set security zones security-zone Local interfaces ge-0/0/1.0
* Explanation of Answer B (Configuring Ethernet-Switching for VLAN 10):
* Since we are using Layer 2 switching between devices in VLAN 10, we need to configure the interface to operate in Ethernet switching mode and assign it to VLAN 10.
* Configuration:
set interfaces ge-0/0/1 unit 0 family ethernet-switching vlan-members 10
* Explanation of Answer D (Transparent Bridging Mode for Layer 2):
* The global mode for Layer 2 switching on the SRX device must be set to transparent-bridge.
This ensures that the SRX operates in Layer 2 mode and can switch traffic between devices without routing.
* Configuration:
set protocols l2-learning global-mode transparent-bridge
Summary:
* Interface Assignment: Interface ge-0/0/1.0 is assigned to the Local zone to allow policy enforcement.
* Ethernet-Switching: The interface is configured for Layer 2 Ethernet switching in VLAN 10.
* Transparent Bridging: The SRX is configured in Layer 2 transparent-bridge mode for switching between devices.
Juniper Security Reference:
* Layer 2 Bridging and Switching Overview: This mode allows the SRX to act as a Layer 2 switch for forwarding traffic between VLAN members without routing. Reference: Juniper Transparent Bridging Documentation.
NEW QUESTION # 75
Exhibit
You are trying to configure an IPsec tunnel between SRX Series devices in the corporate office and branch1. You have committed the configuration shown in the exhibit, but the IPsec tunnel is not establishing.
In this scenario, what would solve this problem.
- A. Change the IKE proposal-set to compatible on the branch1 and corporate devices.
- B. Add multipoint to the st0.0 interface configuration on the branch1 device.
- C. Change the IKE mode to aggressive on the branch1 and corporate devices.
- D. Change the local identity to inet advpn on the branch1 device.
Answer: D
NEW QUESTION # 76
Exhibit
You have recently configured Adaptive Threat Profiling and notice 20 IP address entries in the monitoring section of the Juniper ATP Cloud portal that do not match the number of entries locally on the SRX Series device, as shown in the exhibit.
What is the correct action to solve this problem on the SRX device?
- A. Flush the DNS cache on the SRX device.
- B. Refresh the feed in ATP Cloud.
- C. You must configure the DAE in a security policy on the SRX device.
- D. Force a manual download of the Proxy__Nodes feed.
Answer: A
NEW QUESTION # 77
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. This device is the active node for SRG1.
- B. The ge-0/0/3.0 and ge-0/0/4.0 interfaces are not active and will not respond to ARP requests to the virtual IP MAC address.
- C. The ge-0/0/3.0 and ge-0/0/4.0 interfaces are active and will respond to ARP requests to the virtual IP MAC address.
- D. This device is the backup node for SRG1.
Answer: A,C
NEW QUESTION # 78
Which two additional configuration actions are necessary for the third-party feed shown in the exhibit to work properly? (Choose two.)
- A. You must apply the dynamic address entry in a security intelligence policy.
- B. You must apply the dynamic address entry in a security policy.
- C. You must create a dynamic address entry with the IP filter category and the ipfilter_office365 value.
- D. You must create a dynamic address entry with the C&C category and the cc_offic365 value.
Answer: B,C
NEW QUESTION # 79
Exhibit.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. The custom infected hosts feed will not overwrite the Sky ATP infected host's feed.
- B. The custom infected hosts feed will overwrite the Sky ATP infected host's feed.
- C. Juniper Networks will not investigate false positives generated by this custom feed.
- D. Juniper Networks will investigate false positives generated by this custom feed.
Answer: A,C
Explanation:
Juniper Networks will not investigate false positives generated by this custom feed. - Typically, a vendor like Juniper Networks would not investigate false positives generated by a custom feed because the feed content is controlled by the customer, not Juniper.
The custom infected hosts feed will not overwrite the Sky ATP infected host's feed. - Custom feeds are generally additional to the feeds provided by a vendor's threat intelligence platform like Sky ATP. They are used to supplement the existing threat intelligence and do not overwrite it, but rather work alongside it.
NEW QUESTION # 80
Exhibit
You are not able to ping the default gateway of 192.168 100 1 (or your network that is located on your SRX Series firewall.
Referring to the exhibit, which two commands would correct the configuration of your SRX Series device? (Choose two.)
- A.
- B.
- C.
- D.
Answer: B,C
NEW QUESTION # 81
You have deployed automated threat mitigation using Security Director with Policy Enforcer, Juniper ATP Cloud, SRX Series devices, Forescout, and third-party switches.
In this scenario, which device is responsible for communicating directly to the third-party switches when infected hosts need to be blocked?
- A. Juniper ATP Cloud
- B. SRX Series device
- C. Policy Enforcer
- D. Forescout
Answer: C
Explanation:
Policy Enforcer receives these policies and translates them into device-specific commands. It then communicates with the third-party switches (using protocols like SNMP, RADIUS, or vendor-specific APIs) to enforce those commands, such as blocking the infected hosts' MAC addresses or port access.
Why Policy Enforcer is the Right Choice:
* Centralized Enforcement: Policy Enforcer acts as the central point of enforcement for Security Director policies, ensuring consistent security across the network.
* Multi-Vendor Support: It can interact with a wide range of network devices, including switches from different vendors.
* Automation: Policy Enforcer automates the policy enforcement process, enabling rapid response to threats.
NEW QUESTION # 82
Exhibit
Referring to the exhibit, an internal host is sending traffic to an Internet host using the 203.0.113.1 reflexive address with source port 54311.
Which statement is correct in this situation?
- A. Any host on the Internet can initiate traffic to reach the internal host using the 203.0.113.1 address, a random source port, and destination port54311.
- B. Only the Internet host that the internal host originally communicated with can initiate traffic to reach the internal host using the 203.0 113.1 address, a random source port, and destination port 54311.
- C. Only the Internet host that the internal host originally communicated with can initiate traffic to reach the internal host using the 203.0.113.1 address, source port 54311, and a random destination port.
- D. Any host on the Internet can initiate traffic to reach the internal host using the 203.0.113.1 address, source port 54311, and a random destination port.
Answer: D
NEW QUESTION # 83
You have an initial setup of ADVPN with two spokes and a hub. A host at partner Spoke-1 is sending traffic to a host at partner Spoke-2.
In this scenario, which statement is true?
- A. Spoke-1 will establish the tunnel to Spoke-2 before sending any of the host traffic.
- B. Spoke-1 will send the traffic destined to Spoke-2 through the hub until the VPN is established between the spokes.
- C. Spoke-1 will establish a VPN to Spoke-2 when this is first deployed, so traffic will be sent immediately to Spoke-2.
- D. Spoke-1 will send the traffic through the hub and not use a direct VPN to Spoke-2.
Answer: B
Explanation:
In an ADVPN (Auto-Discovery VPN) environment with a hub-and-spoke topology, the initial communication between two spokes (Spoke-1 and Spoke-2) is always routed through the hub. Once the hub detects the communication, it facilitates the creation of a direct VPN tunnel between the spokes. Until this dynamic tunnel is established, the traffic between the spokes continues to pass through the hub.
In this scenario,Spoke-1 will route traffic through the hubinitially until the direct VPN tunnel toSpoke-2is established.
NEW QUESTION # 84
Refer to the Exhibit:
Which two statements about the configuration shown in the exhibit are correct?
- A. The local peer is assigned a dynamic IP address.
- B. The local IKE gateway IP address is 203.0.113.100.
- C. The remote IKE gateway IP address is 203.0.113.100.
- D. The remote peer is assigned a dynamic IP address.
Answer: C,D
Explanation:
The two statements about the configuration shown in the exhibit are correct are:
A) The remote IKE gateway IP address is 203.0.113.100. The exhibit shows that the address option under the gateway statement is set to 203.0.113.100, which specifies the IP address of the primary IKE gateway. The address option is used to configure the IP address or the hostname of the remote peer that has a static IP address1.
D) The remote peer is assigned a dynamic IP address. The exhibit shows that the dynamic option under the gateway statement is configured with various attributes, such as general-ikeid, ike-user-type, and user-at-hostname. The dynamic option is used to configure the identifier for the remote gateway with a dynamic IP address. The dynamic option also enables the SRX Series device to accept multiple connections from remote peers that have the same identifier2.
The other statements are incorrect because:
B) The local peer is not assigned a dynamic IP address, but a static IP address. The exhibit shows that the local-address option under the gateway statement is set to 192.0.2.100, which specifies the IP address of the local IKE gateway. The local-address option is used to configure the IP address of the local peer that has a static IP address1.
C) The local IKE gateway IP address is not 203.0.113.100, but 192.0.2.100, as explained above.
Reference: gateway (Security IKE) dynamic (Security IKE)
NEW QUESTION # 85
You are deploying threat remediation to endpoints connected through third-party devices. In this scenario, which three statements are correct? (Choose three.)
- A. All third-party switches must support AAA/RADIUS and Dynamic Authorization Extensions to the RADIUS protocol.
- B. The connector uses an API to gather endpoint MAC address information from the RADIUS server.
- C. All third-party switches in the specified network are automatically mapped and registered with the RADIUS server.
- D. The RADIUS server sends Status-Server messages to update infected host information to the connector.
- E. The connector queries the RADIUS server for the infected host endpoint details and initiates a change of authorization (CoA) for the infected host.
Answer: A,B,E
Explanation:
For threat remediation in a third-party network, the RADIUS protocol is necessary to communicate with the RADIUS server for details about infected hosts. CoA enables security measures to be enforced based on endpoint information provided by the RADIUS server. Details on this setup can be found in Juniper RADIUS and AAA Documentation.
When deploying threat remediation to endpoints connected through third-party devices, such as switches, the following conditions must be met for proper integration and functioning:
Explanation of Answer A (Support for AAA/RADIUS and Dynamic Authorization Extensions):
Third-party switches must support AAA (Authentication, Authorization, and Accounting) and RADIUS with Dynamic Authorization Extensions. These extensions allow dynamic updates to be made to a session's authorization parameters, which are essential for enforcing access control based on threat detection.
The connector uses an API to gather MAC address information from the RADIUS server. This MAC address data is necessary to identify and take action on infected hosts or endpoints.
The connector queries the RADIUS server for infected host details and triggers a Change of Authorization (CoA) for the infected host. The CoA allows the connector to dynamically alter the host's access permissions or isolate the infected host based on its threat status.
NEW QUESTION # 86
How does an SRX Series device examine exception traffic?
- A. The device examines the host-inbound traffic for the ingress interface and zone.
- B. The device examines the host-outbound traffic for the ingress interface and zone.
- C. The device examines the host-outbound traffic for the egress interface and zone.
- D. The device examines the host-inbound traffic for the egress interface and zone.
Answer: A
Explanation:
Exception traffic, including management and control plane traffic, is handled by examining host-inbound traffic configurations at the ingress interface and zone. It ensures traffic reaches necessary services like SSH and IKE securely. See Juniper Host Inbound Traffic Documentation for more.
SRX Series devices handle exception traffic (such as management traffic like SSH, Telnet, DNS queries, etc.) differently than regular transit traffic. Exception traffic is examined based on host-inbound traffic for the ingress interface and zone. If traffic is destined for the device itself (e.g., management traffic or routing protocol messages), it must be allowed as host-inbound traffic on both the ingress interface and zone.
Example Command:
bash
set security zones security-zone trust host-inbound-traffic system-services ssh This ensures that traffic destined to the SRX device is inspected based on the ingress interface and zone.
NEW QUESTION # 87
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