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Juniper Security, Professional (JNCIP-SEC) Sample Questions (Q14-Q19):

NEW QUESTION # 14
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 source NAT to translate return traffic from IPv4 address to the IPv6 address of your source device.
B. Configure proxy-NDP on the IPv6 interface for the 2001:db8::1/128 address.
C. Configure destination NAT to translate return traffic from the IPv4 address to the IPv6 address of your source device.
D. Configure proxy-ARP on the external IPv4 interface for the 10.10.201.10/32 address.

Answer: C

NEW QUESTION # 15
A company has acquired a new branch office that has the same address space of one of its local networks,
192.168.100/24. 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@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;
}
}
}
}
D. [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;
}
}
}
}

Answer: A,B

Explanation:
The problem describes two offices needing to communicate, but both share the same IP address space,
192.168.100.0/24. To resolve this, NAT must be configured to translate the conflicting address spaces on each side. Here's how each of the configurations works:
* Option A (Correct):This source NAT rule translates the source address of traffic fromOffice Bto Office A. By configuring source NAT, the source IP addresses from Office B (192.168.210.0/24) will be translated when communicating with Office A (192.168.200.0/24). This method ensures that there is no overlap in address space when packets are transmitted between the two offices.
* Option D (Correct):This is a source NAT rule configured onOffice B, which translates the source addresses fromOffice Ato prevent address conflicts. It ensures that when traffic is initiated fromOffice AtoOffice B, the overlapping address range (192.168.100.0/24) is translated.
* Options B and C (Incorrect):These options involve static NAT rules that map address ranges between the two offices, but they do not resolve the overlapping IP address space issue effectively. Static NAT is not the optimal solution in this scenario since the problem involves address space conflict, which requires translation of source addresses during communication.
Juniper References:
* Juniper NAT Configuration Guide: Detailed instructions on how to configure source NAT and resolve address conflicts between networks.

NEW QUESTION # 16
You want to deploy two vSRX instances in different public cloud providers to provide redundant security services for your network. Layer 2 connectivity between the two vSRX instances is not possible.
What would you configure on the vSRX instances to accomplish this task?

A. Multinode HA
B. Virtual chassis
C. Chassis cluster
D. Secure wire

Answer: D

Explanation:
In this scenario, you are deploying twovSRXinstances across different public cloud providers. Since Layer 2 connectivity is not possible between the two instances, traditional chassis clustering (which requires L2) will not work. Instead, you can useSecure Wireto connect the two vSRX instances, ensuring that traffic flows between them securely without Layer 2 requirements.
* Explanation of Answer B (Secure Wire):
* Secure Wireis a feature in Junos that allows two interfaces on the SRX to act as a Layer 2 wire, passing traffic transparently between them. However, traffic passing through the secure wire is still subject to security policies, which allows you to apply firewall rules without performing routing or switching.
* This solution fits the requirement to have security services between the vSRX instances in different cloud environments without needing L2 connectivity.
Juniper Security Reference:
* Secure Wire Overview: Secure Wire allows traffic to pass transparently while still applying security services, which is ideal for situations where Layer 2 connectivity is not possible. Reference: Juniper Secure Wire Documentation.

NEW QUESTION # 17
Which role does an SRX Series device play in a DS-Lite deployment?

A. Softwire concentrator
B. Softwire initiator
C. STUN server
D. STUN client

Answer: B

Explanation:
In a DS-Lite deployment, the SRX device functions as the softwire initiator, which initiates IPv4-in-IPv6 tunneling to connect IPv4 hosts over an IPv6 infrastructure. For DS-Lite configurations and roles, check Juniper DS-Lite Documentation.
In a DS-Lite (Dual-Stack Lite) deployment, the SRX Series device typically acts as a softwire initiator. DS- Lite is an IPv6 transition technology that allows IPv6-enabled devices to communicate with IPv4 networks.
The softwire initiator is responsible for encapsulating IPv4 packets within an IPv6 header at the customer edge, which is then sent to the softwire concentrator (usually on the service provider's side). Juniper SRX devices can be configured for DS-Lite to support IPv6 clients while communicating with an IPv4 internet via this tunneling mechanism.
To configure DS-Lite on a Juniper SRX device, you'd follow these steps:
* Configure the DS-Lite AFTR (Address Family Transition Router) with the correct IPv6 addressing and routing parameters.
* Enable DS-Lite functionality on the SRX device using Junos OS commands.
* Verify connectivity and ensure that traffic from IPv6 devices is correctly tunneled over IPv4 using tools like ping and traceroute over IPv6.

NEW QUESTION # 18
Exhibit:

In which mode is the SRX Series device?

A. Packet
B. Mixed
C. Ethernet switching
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 # 19
......

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My Review On Juniper JN0-637 Exam Questions

JN0-637 Actual Questions Update in a High Speed - ITPassLeader

Juniper Security, Professional (JNCIP-SEC) Sample Questions (Q14-Q19):

Specifications of the Juniper JN0-637 Desktop Practice Test Software

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