PRACTICE JN0-637 TESTS & EXAM JN0-637 BIBLE

Practice JN0-637 Tests & Exam JN0-637 Bible

Practice JN0-637 Tests & Exam JN0-637 Bible

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Juniper JN0-637 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Layer 2 Security: It covers Layer 2 Security concepts and requires candidates to configure or monitor related scenarios.
Topic 2
  • Logical Systems and Tenant Systems: This topic of the exam explores the concepts and functionalities of logical systems and tenant systems.
Topic 3
  • Advanced Network Address Translation (NAT): This section evaluates networking professionals' expertise in advanced NAT functionalities and their ability to manage complex NAT scenarios.
Topic 4
  • Advanced IPsec VPNs: Focusing on networking professionals, this part covers advanced IPsec VPN concepts and requires candidates to demonstrate their skills in real-world applications.
Topic 5
  • Multinode High Availability (HA): In this topic, aspiring networking professionals get knowledge about multinode HA concepts. To pass the exam, candidates must learn to configure or monitor HA systems.
Topic 6
  • Advanced Policy-Based Routing (APBR): This topic emphasizes on advanced policy-based routing concepts and practical configuration or monitoring tasks.
Topic 7
  • Automated Threat Mitigation: This topic covers Automated Threat Mitigation concepts and emphasizes implementing and managing threat mitigation strategies.

Juniper Security, Professional (JNCIP-SEC) Sample Questions (Q108-Q113):

NEW QUESTION # 108
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 not sending any packets to the VPN peer.
  • C. The SRX is not receiving any packets from the VPN peer.
  • D. The SRX is sending traffic into the tunnel and out toward the VPN peer.

Answer: C,D


NEW QUESTION # 109
You are asked to connect two hosts that are directly connected to an SRX Series device. The traffic should flow unchanged as it passes through the SRX, and routing or switch lookups should not be performed.
However, the traffic should still be subjected to security policy checks.
What will provide this functionality?

  • A. MACsec
  • B. Transparent mode
  • C. Mixed mode
  • D. Secure wire

Answer: D

Explanation:
Secure wire mode on SRX devices allows traffic to flow transparently through the firewall without being routed or switched, while still applying security policies. This is ideal for scenarios wheretraffic inspection is required without altering the traffic path or performing additional routing decisions. For further details on Secure Wire, refer to Juniper Secure Wire Documentation.
In this scenario, you want traffic to pass through the SRX unchanged (without routing or switching lookups) but still be subject to security policy checks. The best solution for this requirement isSecure Wire.
* Explanation of Answer C (Secure Wire):
* Secure Wireallows traffic to flow through the SRX without any Layer 3 routing or Layer 2 switching decisions. It effectively bridges two interfaces at Layer 2 while still applying security policies. This ensures that traffic remains unchanged, while security policies (such as firewall rules) can still be enforced.
* This is an ideal solution when you need the SRX to act as a "bump in the wire" for security enforcement without changing the traffic or performing complex network lookups.
Juniper Security Reference:
* Secure Wire Functionality: Provides transparent Layer 2 forwarding with security policy enforcement, making it perfect for scenarios where traffic needs to pass through unchanged. Reference: Juniper Secure Wire Documentation.


NEW QUESTION # 110
You Implement persistent NAT to allow any device on the external side of the firewall to initiate traffic.

Referring to the exhibit, which statement is correct?

  • A. The port-overloading parameter needs to be turned off in the NAT source interface configuration
  • B. The target-host-port parameter should be used instead of the any-remote-host parameter
  • C. The any-remote-host parameter does not support interface-based NAT and needs an IP pod to work.
  • D. The target-host parameter should be used instead of the any-remote-host parameter.

Answer: C


NEW QUESTION # 111
Exhibit:

Referring to the exhibit, which two statements are true? (Choose two.)

  • A. Hosts in the Local zone can be enabled for control plane access to the SRX.
  • B. Hosts in the Local zone can communicate with hosts in the Trust zone with a security policy.
  • C. An IRB interface is required to enable communication between the Trust and the Untrust zones.
  • D. You can configure security policies for traffic flows between hosts in the Local zone.

Answer: B,C

Explanation:
The Local zone represents a Layer 2 segment, which allows for traffic flows within the same zone and across other zones with proper security policies. Additionally, hosts in different zones (such as Local and Trust) can communicate when policies are defined to allow such interactions. Refer to Juniper Security Policy Documentation for detailed guidance.
From the exhibit:
* IRB Interface Requirement (Answer B): To allow communication between the Trust and Untrust zones (Layer 2 and Layer 3 environments), anIRB (Integrated Routing and Bridging)interface is required. The IRB interface acts as a gateway between Layer 2 and Layer 3 domains.
Command Example:
bash
Copy code
set interfaces irb unit 0 family inet address 10.1.1.1/24
set security zones security-zone untrust interfaces irb.0
* Communication Between Local and Trust (Answer D): Hosts in the Local zone (Layer 2) can communicate with hosts in the Trust zone (Layer 3) if appropriate security policies are in place. A security policy is needed to define how traffic can flow between these zones.
Command Example:
bash
Copy code
set security policies from-zone local to-zone trust policy allow-local-trust match source-address any destination-address any application any set security policies from-zone local to-zone trust policy allow-local-trust then permit These configurations ensure proper communication between zones in a mixed Layer 2 and Layer
3environment.


NEW QUESTION # 112
Exhibit:

Referring to the exhibit, which two statements are correct? (Choose two.)

  • A. You can secure inter-VLAN traffic with a security policy on this device.
  • B. The device can pass Layer 2 and Layer 3 traffic at the same time.
  • C. You cannot secure intra-VLAN traffic with a security policy on this device.
  • D. The device cannot pass Layer 2 and Layer 3 traffic at the same time.

Answer: A,B

Explanation:
The exhibit provides information about an SRX Series device operating in transparent mode (Layer 2) and Layer 3 routing at the same time. Let's break down the correct answers:
* Explanation of Answer B (Secure Inter-VLAN Traffic with a Security Policy):
* The SRX device can secure inter-VLAN traffic because it supports security policies for Layer 3 traffic between different VLANs. In this case, traffic moving between different VLANs (i.e., Layer 3 traffic) can be processed and controlled using security policies.
* Explanation of Answer C (Pass Layer 2 and Layer 3 Traffic Simultaneously):
* The SRX device can handle both Layer 2 and Layer 3 traffic simultaneously. In mixed mode, the device is capable of switching traffic at Layer 2 (intra-VLAN) while also routing traffic at Layer
3 (inter-VLAN). This is evident from the global configuration showing transparent bridge mode and Layer 3 interfaces.
Juniper Security Reference:
* Mixed Mode Overview: Juniper SRX devices in mixed mode can operate as both a Layer 2 switch and a Layer 3 router, allowing it to pass traffic at both layers simultaneously. Reference: Juniper Mixed Mode Documentation.


NEW QUESTION # 113
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