Free JN0-637: Security - Professional (JNCIP-SEC) Exam Questions and Answers
92 verified practice questions for JN0-637.
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Last updated: September 19, 2026
- Exam code
- JN0-637
- Provider
- Juniper
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- 130 mins · 70%
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Question #1
You want to create a connection for communication between tenant systems without using physical revenue ports on the SRX Series device. What are two ways to accomplish this task? (Choose two.)
Select 2 answers.
Please select an optionIncorrectCorrect answer: B, D
Without consuming physical revenue ports you can connect tenant systems with an interconnect VPLS switch or a point-to-point logical tunnel interface; an external router or secure wire does not serve this purpose.
Was this answer correct?Question #2
Exhibit: Referring to the exhibit, which two statements are correct? (Choose two.)
Select 2 answers.
Please select an optionIncorrectCorrect answer: C, D
The interfaces are active and respond to ARP for virtual IP as long as the node is the primary or active node in the SRG group. This ensures high availability and proper traffic forwarding. For information, refer to Juniper SRX HA Documentation. The exhibit shows information about a chassis cluster and its services redundancy group (SRG1). Let's analyze the relevant details: • Explanation of Answer B (Backup Node for SRG1): • Explanation of Answer A (Interfaces Not Active): Juniper Security Reference: • Chassis Cluster Redundancy Overview: In a chassis cluster, the backup node does not respond to ARP requests for the virtual IP. Only the active node handles such requests to ensure seamless traffic forwarding. Reference: Juniper Chassis Cluster Documentation. ==========
Was this answer correct?Question #3
Which encapsulation type must be configured on the lt-0/0/0 logical units for an interconnect logical systems VPLS switch?
Please select an optionIncorrectCorrect answer: C
The logical tunnel units carrying the interconnect logical systems VPLS switch must use encapsulation ethernet-vpls; the ethernet and ethernet-bridge encapsulations are used for other interconnect types.
Was this answer correct?Question #4
Which two statements describe the behavior of logical systems? (Choose two.)
Select 2 answers.
Please select an optionIncorrectCorrect answer: C, D
Each logical system has its own copy of the routing protocol process and receives a default routing instance automatically, so routing state stays isolated without manual instance creation.
Was this answer correct?Question #5
You are using ADVPN to deploy a hub-and-spoke VPN to connect your enterprise sites. Which two statements are true in this scenario? (Choose two.)
Select 2 answers.
Please select an optionIncorrectCorrect answer: C, D
ADVPN spoke-to-spoke shortcuts depend on OSPF for route exchange, and the hub authenticates the dynamic spoke peers with certificates. ADVPN is not a full mesh and iBGP is not required.
Was this answer correct?Question #6
You configure two Ethernet interfaces on your SRX Series device as Layer 2 interfaces and add them to the same VLAN. The SRX is using the default L2-learning setting. You do not add the interfaces to a security zone. Which two statements are true in this scenario? (Choose two.)
Select 2 answers.
Please select an optionIncorrectCorrect answer: A, C
When Ethernet interfaces are configured as Layer 2 and added to the same VLAN without being assigned to a security zone, they will not forward traffic by default. Additionally, because they are operating in a pure Layer 2 switching mode, they lack the capability to enforce stateful security policies. For further details, refer to Juniper Ethernet Switching Layer 2 Documentation. • Explanation of Answer A (Unable to Apply Stateful Security Features): • Explanation of Answer C (Interfaces Will Not Forward Traffic): Juniper Security Reference: • Layer 2 Interface Configuration: Layer 2 interfaces must be properly assigned to security zones to enable traffic forwarding and apply security policies. Reference: Juniper Networks Layer 2 Interface Documentation. ==========
Was this answer correct?Question #7
Exhibit: The Ipsec VPN does not establish when the peer initiates, but it does establish when the SRX series device initiates. Referring to the exhibit, what will solve this problem?
Please select an optionIncorrectCorrect answer: C
Was this answer correct?Question #8
Exhibit: You have deployed a pair of SRX series devices in a multimode HA environment. You need to enable IPsec encryption on the interchassis link. Referring to the exhibit, which three steps are required to enable ICL encryption? (Choose three.)
Select 3 answers.
Please select an optionIncorrectCorrect answer: A, C, D
• A. Install the Junos IKE package on both nodes. While I previously stated that IKE is usually included in the base Junos OS image, it's essential to ensure that the necessary IKE package is indeed installed and enabled on both SRX nodes to support ICL encryption. • C. Configure a VPN profile for the HA traffic and apply it to both nodes. This dedicated VPN profile defines the security parameters (encryption algorithms, authentication, etc.) specifically for the ICL traffic. • D. Enable HA link encryption in the IPsec profile on both nodes. Within the IPsec profile, you must explicitly enable ICL encryption to ensure that all traffic traversing the interchassis link is protected. Why E is incorrect: • E. Enable HA link encryption in the IKE profile on both nodes. While securing IKE negotiations is important, it's typically handled within the IPsec profile itself when configuring ICL encryption on SRX devices.
Was this answer correct?Question #9
You are asked to establish a hub-and-spoke IPsec VPN using an SRX Series device as the hub. All of the spoke devices are third-party devices. Which statement is correct in this scenario?
Please select an optionIncorrectCorrect answer: B
Because third-party spokes cannot run NHTB, the SRX hub needs statically configured next-hop tunnel binding entries for each spoke. Aggressive mode, policy-based VPNs, and loopback peering are not requirements.
Was this answer correct?Question #10
What are three configurable monitor components for a service redundancy group? (Choose three.)
Select 3 answers.
Please select an optionIncorrectCorrect answer: A, B, D
A service redundancy group can monitor interfaces, IP addresses, and ARP entries; BFD and hardware alarms are not configurable monitor components.
Was this answer correct?
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