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Pass Guaranteed High-quality Juniper - JN0-637 - Security, Professional (JNCIP-SEC) Valid Test Notes

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Juniper JN0-637 Exam Syllabus Topics:

Topic
Details

Topic 1

Layer 2 Security: It covers Layer 2 Security concepts and requires candidates to configure or monitor related scenarios.

Topic 2

Troubleshooting Security Policies and Security Zones: This topic assesses the skills of networking professionals in troubleshooting and monitoring security policies and zones using tools like logging and tracing.

Topic 3

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 4

Logical Systems and Tenant Systems: This topic of the exam explores the concepts and functionalities of logical systems and tenant systems.

Topic 5

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 6

Advanced Policy-Based Routing (APBR): This topic emphasizes on advanced policy-based routing concepts and practical configuration or monitoring tasks.

Topic 7

Advanced Network Address Translation (NAT): This section evaluates networking professionals' expertise in advanced NAT functionalities and their ability to manage complex NAT scenarios.

Juniper Security, Professional (JNCIP-SEC) Sample Questions (Q90-Q95):

NEW QUESTION # 90
Exhibit:

In which mode is the SRX Series device?

A. Packet
B. Ethernet switching
C. Mixed
D. Transparent

Answer: D

Explanation:
The exhibit shows that theGlobal Modeof the SRX Series device is set to "Transparent bridge." This means the device is operating intransparent mode. In this mode, the SRX Series device acts like a Layer 2 bridge, forwarding traffic based on MAC addresses and not performing any Layer 3 (IP) routing or firewalling.
Intransparent mode, the SRX device is effectively invisible to the network at the IP layer, and it bridges traffic between Ethernet interfaces without needing to assign IP addresses to those interfaces. This mode is typically used when you want the SRX to act as a firewall without making any changes to the network's routing configuration.
Key Indicators from the Exhibit:
* Global Mode: Transparent bridge: This confirms that the device is configured in transparent mode.
* MAC learningandEthernet Switchingoptions are enabled, which aligns with transparent mode functionality where the device learns MAC addresses and switches traffic between VLANs.
Juniper Security Reference:
* Transparent Mode Overview: Transparent mode is used to deploy a firewall in Layer 2 mode, where it bridges traffic between VLANs without being an IP routing device. Reference: Juniper Networks Transparent Mode Documentation.

NEW QUESTION # 91
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?

A. Application tracking on the untrust zone needs to be removed.
B. IKE needs to be added for the host-inbound traffic on the VPN zone.
C. IKE needs to be added to the host-inbound traffic directly on the ge-0/0/0 interface.
D. The screen configuration on the untrust zone needs to be modified.

Answer: C

NEW QUESTION # 92
You have the NAT rule, shown in the exhibit, applied to allow communication across an IPsec tunnel between your two sites with identical networks.
Which statement is correct in this scenario?

A. The NAT rule will only translate two addresses at a time.
B. The NAT rule in applied to the N/A routing instance.
C. 10 packets have been processed by the NAT rule.
D. The NAT rule with translate the source and destination addresses.

Answer: D

NEW QUESTION # 93
You are configuring transparent mode on an SRX Series device. You must permit IP-based traffic only, and BPDUs must be restricted to the VLANs from which they originate.
Which configuration accomplishes these objectives?

Answer: D

Explanation:
https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/ref/statement/family- ethernet-switching-edit-interfaces-qfx-series.html#statement-name-statement__d26608e73

NEW QUESTION # 94
Exhibit:

Referring to the exhibit, a default static route on SRX-1 sends all traffic to ISP-A. You have configured APBR to send all requests for streaming video traffic to ISP-B. However, the return traffic from the streaming video server is coming through ISP-A, and the traffic is being dropped by SRX-1. You can only make changes on SRX-1.
How do you solve this problem?

A. Change the APBR routing instance from a forwarding instance to a virtual router instance.
B. Configure BGP to control the return path of the streaming video traffic.
C. Enable AppTrack to keep track of the sessions and zones for the streaming video traffic.
D. Place both ISP-facing interfaces in the same zone.

Answer: A

Explanation:
A virtual router instance allows for independent routing tables, which helps manage asymmetric routing issues in APBR configurations. This ensures both initial and return traffic follow the same path, resolving session issues. Further details: Juniper APBR Configuration.
The issue in the scenario stems from asymmetric routing. The SRX-1 device sends streaming traffic to ISP-B (as intended) using APBR, but the return traffic is coming back through ISP-A due to the default route.
Because APBR uses forwarding instances, the traffic is dropped when it returns through a different zone.
To solve this:
* Change APBR routing instance to a virtual router (Answer B): By changing the APBR routing instance to a virtual router, the SRX will maintain separate routing tables for each ISP, ensuring proper bidirectional traffic flow. Virtual routers provide independent routing tables and are ideal for ensuring traffic symmetry in multi-homed environments.
Example Command:
bash
Copy code
set routing-instances ISP-B instance-type virtual-router
set routing-instances ISP-B routing-options static route 0.0.0.0/0 next-hop 192.0.2.1 By implementing virtual routing instances, you can resolve the asymmetry and ensure that both outbound and return traffic use the same ISP.

NEW QUESTION # 95
......

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