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Three Easy-to-Use Juniper JN0-637 Exam Questions Formats

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Juniper JN0-637 Exam Syllabus Topics:

Topic
Details

Topic 1

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

Topic 2

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

Topic 3

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

Topic 4

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 5

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

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Juniper Security, Professional (JNCIP-SEC) Sample Questions (Q25-Q30):

NEW QUESTION # 25
Exhibit:

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. This device is the backup node for SRG1.
D. 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.

Answer: B,C

Explanation:
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 itsservices redundancy group (SRG1). Let's analyze the relevant details:
* Explanation of Answer B (Backup Node for SRG1):
* The exhibit indicates that this SRX device is in thebackuprole for SRG1. Thestatus: BACKUP field confirms that this device is currently in a standby role and is not the active node for the services redundancy group.
* Explanation of Answer A (Interfaces Not Active):
* Since the device is in the backup role, the interfacesge-0/0/3.0andge-0/0/4.0will not respond to ARP requests for the virtual IP's MAC address. Only the active node's interfaces respond to ARP requests in a chassis cluster configuration.
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.

NEW QUESTION # 26
Referring to the exhibit,

Which two statements are correct about the NAT configuration? (Choose two.)

A. Both the internal and the external host can initiate a session after the initial translation.
B. Any external host will be able to initiate a session to the reflexive address.
C. The original destination port is used for the source port for the session.
D. Only a specific host can initiate a session to the reflexive address after the initial session.

Answer: A,D

NEW QUESTION # 27
A company has acquired a new branch office that has the same address space as one of its local networks,
192.168.100.0/24. The offices need to communicate with each other.
Which two NAT configurations will satisfy this requirement? (Choose two.)

A. [edit security nat source]
user@OfficeA# show rule-set OfficeBtoA {
from zone OfficeB;
to zone OfficeA;
rule 1 {
match {
source-address 192.168.210.0/24;
destination-address 192.168.200.0/24;
}
then {
source-nat { interface; }
}
}
}
B. [edit security nat source]
user@OfficeB# show rule-set OfficeAtoB {
from zone OfficeA;
to zone OfficeB;
rule 1 {
match {
source-address 192.168.200.0/24;
destination-address 192.168.210.0/24;
}
then {
source-nat { interface; }
}
}
}
C. [edit security nat static]
user@OfficeA# show rule-set From-Office-B {
from interface ge-0/0/0.0;
rule 1 {
match {
destination-address 192.168.200.0/24;
}
then {
static-nat {
prefix { 192.168.100.0/24; }
}
}
}
}
D. [edit security nat static]
user@OfficeB# show rule-set From-Office-A {
from interface ge-0/0/0.0;
rule 1 {
match {
destination-address 192.168.210.0/24;
}
then {
static-nat {
prefix { 192.168.100.0/24; }
}
}
}
}

Answer: C,D

Explanation:
Comprehensive Detailed Step-by-Step Explanation with All Juniper Security References When two networks with overlapping IP address spaces need to communicate, Network Address Translation (NAT) is required to translate the IP addresses so that they become unique across the combined network. In this scenario, both the local network and the new branch office use the same subnet: 192.168.100.0/24. To enable communication without IP conflicts, we need to translate the overlapping addresses to unique ones.
Understanding the Problem:
* Local Network (Office A): 192.168.100.0/24
* Branch Office (Office B): 192.168.100.0/24
* Objective: Allow communication between Office A and Office B despite overlapping IP ranges.
Solution Overview:
To resolve the overlapping IP addresses, we can use Static NAT to create a one-to-one mapping between the overlapping IP addresses and a unique IP range. This way, when packets traverse the network boundary, their IP addresses are translated to a non-overlapping range, avoiding conflicts.
Option B and Option C implement Static NAT to resolve the issue:
* Option B (At Office A):
* Translates destination addresses from 192.168.200.0/24 to 192.168.100.0/24.
* This allows Office B to reach Office A's overlapping network by targeting a unique IP range (
192.168.200.0/24).
* Option C (At Office B):
* Translates destination addresses from 192.168.210.0/24 to 192.168.100.0/24.
* This allows Office A to reach Office B's overlapping network by targeting a unique IP range (
192.168.210.0/24).
Detailed Explanation:
1. Static NAT Configuration at Office A (Option B):
* Configuration:
[edit security nat static]
user@OfficeA# show rule-set From-Office-B {
from interface ge-0/0/0.0;
rule 1 {
match {
destination-address 192.168.200.0/24;
}
then {
static-nat {
prefix { 192.168.100.0/24; }
}
}
}
}
* Explanation:
* from interface ge-0/0/0.0;: Specifies the interface through which the traffic is received.
* Matching Traffic:
* destination-address 192.168.200.0/24;: Matches packets destined for 192.168.200.0/24.
* Action:
* static-nat { prefix { 192.168.100.0/24; } }: Translates the destination address to
192.168.100.0/24.
* Result:
* Office B sends packets to 192.168.200.0/24, which are translated to 192.168.100.0/24 upon arrival at Office A.

NEW QUESTION # 28
You are connecting two remote sites to your corporate headquarters site.You must ensure that all traffic is secured and sent directly between sites In this scenario, which VPN should be used?

A. full mesh Layer 3 VPN with EBGP
B. hub-and-spoke IPsec VPN
C. Layer 2 VPN
D. IPsec ADVPN

Answer: D

NEW QUESTION # 29
Exhibit.

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

A. The configured solution allows IPv6 to IPv4 translation.
B. The configured solution allows IPv4 to IPv6 translation.
C. The IPv6 address is invalid.
D. External hosts cannot initiate contact.

Answer: A,C

NEW QUESTION # 30
......

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