Pass Juniper JN0-637 Actual Free Exam Q&As Updated Dump Oct 16, 2025
Latest JN0-637 Actual Free Exam Updated 125 Questions
NEW QUESTION # 65
Exhibit
Which statement is true about the output shown in the exhibit?
- A. The SRX Series device is configured with default security forwarding options.
- B. The SRX Series device is configured with flow-based IPv6 forwarding options.
- C. The SRX Series device is configured with packet-based IPv6 forwarding options.
- D. The SRX Series device is configured to disable IPv6 packet forwarding.
Answer: A
NEW QUESTION # 66
You are asked to see if your persistent NAT binding table is exhausted.
Which show command would you use to accomplish this task?
- A. show security nat source persistent-nat-table all
- B. show security nat source summary
- C. show security nat source persistent-nat-table summary
- D. show security nat source pool all
Answer: A
Explanation:
The command show security nat source persistent-nat-table all provides a comprehensive view of all entries in the persistent NAT table, enabling administrators to monitor and manage resource exhaustion. Refer to Juniper NAT Monitoring Guide for more.
In Junos OS, whenpersistent NATis configured, a binding table is created to keep track of NAT sessions and ensure that specific hosts are allowed to initiate sessions back to internal hosts. To check if the persistent NAT binding table is full or exhausted, the correct command must display theentire table.
* Correct Command (D):
* The commandshow security nat source persistent-nat-table allwill display the entire persistent NAT binding table. This allows you to check whether the table is exhausted or if there is space available for new persistent NAT sessions.
* Incorrect Options:
* Option A: The command show security nat source persistent-nat-table summary provides a summary view but does not give detailed insights into whether the table is exhausted.
* Option BandOption C: These commands deal with general NAT source summaries or pools, which are not related specifically to persistent NAT bindings.
Juniper References:
* Juniper Persistent NAT Documentation: Describes the persistent NAT binding table and the commands used to monitor its status.
NEW QUESTION # 67
Referring to the exhibit,
which statement about TLS 1.2 traffic is correct?
- A. TLS 1.2 traffic will be sent to routing instance R1 and forwarded to next hop 10.1.0.1.
- B. TLS 1.2 traffic will be sent to routing instance R2 but not forwarded to the next hop.
- C. TLS 1.2 traffic will be sent to routing instance R1 but not forwarded to the next hop.
- D. TLS 1.2 traffic will be sent to routing instance R2 and forwarded to next hop 10.2.0.1.
Answer: A
Explanation:
The configuration in the exhibit shows an advanced-policy-based-routing (APBR) profile that directs traffic based on application type. Specifically:
* Rule Web-ProxymatchesHTTP and HTTPS (TLS 1.2)traffic and forwards it torouting instance R1.
* The routing-instance R1 has a static route to send traffic to the next hop10.1.0.1.
Given this configuration, TLS 1.2 traffic, which is part of the HTTPS category, will be sent to routing instance R1 and then forwarded to the next hop IP address10.1.0.1.
NEW QUESTION # 68
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. Once the trace has generated 10 log files, the trace process will halt.
- B. The file debugger will be readable by all users.
- C. Once the trace has generated 10 log files, older logs will be overwritten.
- D. The file debugger will be readable only by the user who committed this configuration
Answer: A,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 # 69
Exhibit:
Host A shown in the exhibit is attempting to reach the Web1 webserver, but the connection is failing. Troubleshooting reveals that when Host A attempts to resolve the domain name of the server (web.acme.com), the request is resolved to the private address of the server rather than its public IP. Which feature would you configure on the SRX Series device to solve this issue?
- A. STUN protocol
- B. Persistent NAT
- C. Double NAT
- D. DNS doctoring
Answer: D
Explanation:
DNS doctoring modifies DNS responses for hosts behind NAT devices, allowing them to receive the correct public IP address for internal resources when queried from the public network. This prevents issues where private IPs are returned and are not reachable externally. For details, visit Juniper DNS Doctoring Documentation.
In this scenario, Host A is trying to resolve the domain name web.acme.com, but the DNS resolution returns the private IP address of the web server instead of its public IP. This is a common issue in networks where private addresses are used internally, but public addresses are required for external clients.
DNS doctoring is a feature that modifies DNS replies as they pass through the SRX device. In this case, DNS doctoring can be used to replace the private IP address returned in the DNS response with the correct public IP address for Host A. This allows external clients to reach internal resources without being aware of their private IP addresses.
NEW QUESTION # 70
Exhibit:
You have configured a CoS-based VPN that is not functioning correctly. Referring to the exhibit, which action will solve the problem?
- A. You must delete one forwarding class.
- B. You must use inet precedence instead of DSCP.
- C. You must change the loss priorities of the forwarding classes to low.
- D. You must change the code point for the DB-data forwarding class to 10000.
Answer: A
Explanation:
In the exhibit, the CoS-based VPN configuration is not functioning correctly due to an issue with the number of forwarding classes. The maximum number of forwarding classes supported for CoS-based VPNs with multiple SAs (security associations) is typically four forwarding classes. In this case, more than four forwarding classes are defined.
To solve the issue, one forwarding class must be deleted to ensure that the total number of forwarding classes is reduced to four or fewer.
NEW QUESTION # 71
You are asked to establish IBGP between two nodes, but the session is not established. To troubleshoot this problem, you configured trace options to monitor BGP protocol message exchanges.
Referring to the exhibit, which action would solve the problem?
- A. Modify the security policy to permit the BGP packets.
- B. Add a firewall filter to lo0 that permits the BGP packets.
- C. Add BGP to the lo0 host-inbound-traffic configuration.
- D. Add the junos-host zone policy to permit the BGP packets.
Answer: C
Explanation:
Explanation:
NEW QUESTION # 72
Referring to the exhibit, which two statements are true ?
- A. Every VPN packet that the SRX receives from the VPN peer is outside the ESP sequence window
- B. The SRX is sending traffic into the tunnel and out toward the VPN peer.
- C. The SRX is not sending any packets to the VPN peer.
- D. The SRX is not receiving any packets from the VPN peer.
Answer: B,D
NEW QUESTION # 73
You are deploying a large-scale VPN spanning six sites. You need to choose a VPN technology that satisfies the following requirements:
All sites must have secure reachability to all other sites. New spoke sites can be added without explicit configuration on the hub site. All spoke-to-spoke communication must traverse the hub site.
Which VPN technology will satisfy these requirements?
- A. Group VPN
- B. ADVPN
- C. AutoVPN
- D. Secure Connect VPN
Answer: C
Explanation:
AutoVPN simplifies deployment by dynamically establishing tunnels from spokes to the hub. This architecture supports easy scaling with minimal configuration changes, ensuring spoke-to-spoke traffic flows through the hub. For more information, see Juniper AutoVPN Overview.
In this scenario, you need a VPN solution that ensures secure, dynamic connectivity between multiple sites, with the following conditions:
All sites must have secure reachability.
New spoke sites can be added without explicit configuration on the hub site.
Spoke-to-spoke communication must traverse the hub.
The correct technology to meet these requirements is AutoVPN. It simplifies VPN configurations by automating the setup between hub and spoke sites. Additionally, AutoVPN automatically establishes secure tunnels for new spoke sites without requiring manual configuration at the hub, and all spoke- to-spoke traffic is routed through the hub.
NEW QUESTION # 74
You have a multinode HA default mode deployment and the ICL is down.
In this scenario, what are two ways that the SRX Series devices verify the activeness of their peers? (Choose two.)
- A. Each peer sends a probe with the virtual IP address as the destination IP address.
- B. Custom IP addresses may be configured for the activeness probe.
- C. Each peer sends a probe with the virtual IP address as the source IP address and the upstream router as the destination IP address.
- D. Fabric link heartbeats are used to verify the activeness of the peers.
Answer: B,C
Explanation:
Comprehensive Detailed Step-by-Step Explanation with All Juniper Security References Understanding the Scenario:
* Multinode HA Default Mode Deployment:
* In a chassis cluster, two SRX devices operate together to provide high availability.
* ICL (Inter-Cluster Link) is Down:
* The control and fabric links between the nodes are not operational.
* Objective:
* Determine how the SRX devices verify each other's activeness without the ICL.
Option A: Custom IP addresses may be configured for the activeness probe.
* Explanation:
* When the control link is down, SRX devices use an ICMP ping-based activeness probe to check the peer's status.
* Custom IP addresses can be configured as probe targets to verify the peer's activeness.
NEW QUESTION # 75
Your IPsec tunnel is configured with multiple security associations (SAs). Your SRX Series device supports the CoS-based IPsec VPNs with multiple IPsec SAs feature. You are asked to configure CoS for this tunnel.
Which two statements are true in this scenario? (Choose two.)
- A. The local and remote gateways do not need the forwarding classes to be defined in the same order.
- B. A maximum of four forwarding classes can be configured for a VPN with the multi-sa forwarding- classes statement.
- C. A maximum of eight forwarding classes can be configured for a VPN with the multi-sa forwarding- classes statement.
- D. The local and remote gateways must have the forwarding classes defined in the same order.
Answer: A,C
Explanation:
Explanation:
NEW QUESTION # 76
Exhibit:
Referring to the exhibit, the operator user is unable to save configuration files to a usb stick the is plugged into SRX.
What should you do to solve this problem?
- A. Add the interface-control permission flag to the operation class
- B. Add the system permission flag to the operation class
- C. Add the floppy permission flag to the operations class
- D. Add the system-control permission flag to the operation class
Answer: D
Explanation:
To solve the problem of the operator user being unable to save configuration files to a USB stick that is plugged into SRX, you need to add the system-control permission flag to the operations class.
The other options are incorrect because:
A) Adding the floppy permission flag to the operations class is not sufficient or necessary to save configuration files to a USB stick. The floppy permission flag allows the user to access the floppy drive, but not the USB drive. The USB drive is accessed by the system permission flag, which is already included in the operations class1.
C) Adding the interface-control permission flag to the operations class is also not sufficient or necessary to save configuration files to a USB stick. The interface-control permission flag allows the user to configure and monitor interfaces, but not to save configuration files. The configuration permission flag, which is also already included in the operations class, allows the user to save configuration files1.
D) Adding the system permission flag to the operations class is redundant and ineffective to save configuration files to a USB stick. The system permission flag allows the user to access the system directory, which includes the USB drive. However, the operations class already has the system permission flag by default1. The problem is not the lack of system permission, but the lack of system- control permission.
Therefore, the correct answer is B. You need to add the system-control permission flag to the operations class to solve the problem. The system-control permission flag allows the user to perform system-level operations, such as rebooting, halting, or snapshotting the device1. These operations are required to mount, unmount, and copy files to and from the USB drive2. To add the system-control permission flag to the operations class, you need to perform the following steps:
Enter the configuration mode: user@host> configure
Navigate to the system login class hierarchy: user@host# edit system login class operations Add the system-control permission flag: user@host# set permissions system-control Commit the changes: user@host# commit Reference: login (System) How to mount a USB drive on EX/SRX/MX/QFX Series platforms to import/export files
NEW QUESTION # 77
Click the Exhibit button.
Which type of NAT is shown in the exhibit?
- A. persistent NAT
- B. DS-Lite
- C. NAT46
- D. NAT64
Answer: D
NEW QUESTION # 78
Referring to the exhibit, you have been assigned the user LogicalSYS1 credentials shown in the configuration.
In this scenario, which two statements are correct? (Choose two.)
- A. When you log in to the device, you will be permitted to view all routing tables available on the SRX device
- B. When you log in to the device, you will be located at the operational mode of the Logic
- C. When you log in to the device, you will be located at the operational mode of the main system
- D. When you log in to the device, you will be permitted to view only the routing tables for Logic
Answer: B,D
NEW QUESTION # 79
You are deploying a virtualization solution with the security devices in your network Each SRX Series device must support at least 100 virtualized instances and each virtualized instance must have its own discrete administrative domain.
In this scenario, which solution would you choose?
- A. logical systems
- B. VRF instances
- C. virtual router instances
- D. tenant systems
Answer: A
NEW QUESTION # 80
You want to configure the SRX Series device to map two peer interfaces together and ensure that there is no switching or routing lookup to forward traffic.
Which feature on the SRX Series device is used to accomplish this task?
- A. Mixed mode
- B. Switching mode
- C. Secure wire
- D. Transparent mode
Answer: C
Explanation:
Comprehensive Detailed Step-by-Step Explanation with All Juniper Security References Understanding Secure Wire:
* Secure Wire Feature:
* Connects two interfaces directly without any Layer 2 or Layer 3 processing.
* No routing or switching lookup occurs.
* Use Case:
* Ideal for scenarios where traffic needs to pass through the SRX device transparently.
Option B: Secure wire
* Explanation:
* Secure wire creates a bidirectional link between two interfaces.
* Traffic flows between the interfaces as if they are connected by a physical wire.
NEW QUESTION # 81
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. The APBR rule does a match on the first packet.
- B. IDP disable is not configured on the APBR rule.
- C. The application services bypass is not configured on the APBR rule.
- D. The session did not properly reclassify midstream to the correct APBR rule.
Answer: C,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
Copy code
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
Copy code
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
Copy code
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 # 82
Exhibit:
You are configuring NAT64 on your SRX Series device. You have committed the configuration shown in the exhibit. Unfortunately, the communication with the 10.10.201.10 server is not working. You have verified that the interfaces, security zones, and security policies are all correctly configured.
In this scenario, which action will solve this issue?
- A. Configure proxy-ARP on the external IPv4 interface for the 10.10.201.10/32 address.
- B. Configure proxy-NDP on the IPv6 interface for the 2001:db8::1/128 address.
- C. Configure source NAT to translate return traffic from IPv4 address to the IPv6 address of your source device.
- D. Configure destination NAT to translate return traffic from the IPv4 address to the IPv6 address of your source device.
Answer: D
NEW QUESTION # 83
Exhibit:
Your company uses SRX Series devices to establish an IPsec VPN that connects Site-1 and the HQ networks. You want VoIP traffic to receive priority over data traffic when it is forwarded across the VPN.
Which three actions should you perform in this scenario? (Choose three.)
- A. Enable the copy-outer-dscp parameter so that DSCP header values are copied to the tunneled packets.
- B. Enable next-hop tunnel binding.
- C. Enable the multi-sa parameter to enable two separate IPsec SAs for the VoIP and data traffic.
- D. Create a firewall filter that identifies VoIP traffic and associates it with the correct forwarding class.
- E. Configure CoS forwarding classes and scheduling parameters.
Answer: C,D,E
NEW QUESTION # 84
Your customer needs embedded security in an EVPN-VXLAN solution.
What are two benefits of adding an SRX Series device in this scenario? (Choose two.)
- A. It enhances tunnel inspection for VXLAN encapsulated traffic with Layer 4-7 security services.
- B. It enhances tunnel inspection for VXLAN encapsulated traffic with only Layer 4 security services.
- C. It adds extra security with the capabilities of an enterprise-grade firewall in the EVPN-VXLAN overlay.
- D. It adds extra security with the capabilities of an enterprise-grade firewall in the EVPN-VXLAN underlay.
Answer: A,C
Explanation:
The SRX Series can inspect traffic within VXLAN tunnels, providing in-depth security services across multiple layers. Adding SRX in the overlay network allows comprehensive control, leveraging advanced firewall capabilities. For more details, see Juniper EVPN-VXLAN Security.
When integrating an SRX Series device into anEVPN-VXLANsolution, it offers several security benefits:
* Layer 4-7 Security Services (Answer A): The SRX can providedeep packet inspectionfor VXLAN encapsulated traffic, enhancing security by offering services such as intrusion prevention, application layer filtering, and antivirus scanning. This allows security monitoring of the encapsulated traffic at higher layers of the OSI model (Layers 4-7), which is essential for advanced threat detection.
* Security in the Overlay Network (Answer C): The SRX adds security by functioning as an enterprise- grade firewall within theEVPN-VXLAN overlay. This means that traffic flowing between virtualized segments or networks can be inspected and filtered using SRX firewall rules, ensuring that the VXLAN overlay remains secure.
These features make the SRX a powerful addition for securing EVPN-VXLAN environments, providing comprehensive security for encapsulated traffic and ensuring that both the underlay and overlay networks are protected.
NEW QUESTION # 85
Exhibit:
Which two statements are correct about the output shown in the exhibit. (Choose Two)
- A. The packet is dropped by the default security policy.
- B. The data shown requires a traceoptions flag of basic-datapath.
- C. The data shown requires a traceoptions flag of host-traffic.
- D. The packet is dropped by a configured security policy.
Answer: A,B
NEW QUESTION # 86
Exhibit.
A hub member of an ADVPN is not functioning correctly.
Referring the exhibit, which action should you take to solve the problem?
- A. [edit security]
user@hub-1# set ike gateway advpn-gateway advpn suggester disable - B. [edit interfaces]
user@hub-1# delete ipsec vpn advpn-vpn traffic-selector - C. [edit interfaces]
root@vSRX-1# delete st0.0 multipoint - D. [edit security]
user@hub-1# delete ike gateway advpn-gateway advpn partner
Answer: B
NEW QUESTION # 87
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