Juniper JN0-637 JNCIP-SEC Exam Practice Test Instant Access

Question 1

Click the Exhibit button.

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

AThis device is the backup node for SRG1.

BThe 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.

CThis device is the active node for SRG1.

DThe 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 : C, D

Question 2

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?

AChassis cluster

BSecure wire

CMultinode HA

DVirtual chassis

Answer : C

Question 3

Exhibit:

You have deployed an SRX Series device as shown in the exhibit. The devices in the Local zone have recently been added, but their SRX interfaces have not been configured. You must configure the SRX to meet the following requirements:

Devices in the 10.1.1.0/24 network can communicate with other devices in the same network but not with other networks or the SRX.

You must be able to apply security policies to traffic flows between devices in the Local zone.

Which three configuration elements will be required as part of your configuration? (Choose three.)

Aset security zones security-zone Local interfaces ge-0/0/1.0

Bset interfaces ge-0/0/1 unit 0 family ethernet-switching vlan-members 10

Cset protocols l2-learning global-mode switching

Dset protocols l2-learning global-mode transparent-bridge

Eset security zones security-zone Local interfaces irb.10

Answer : A, B, D

In this scenario, we need to configure the SRX Series device so that devices in the Local zone (VLAN 10, 10.1.1.0/24 network) can communicate with each other but not with other networks or the SRX itself. Additionally, you must be able to apply security policies to traffic flows between the devices in the Local zone.

Explanation of Answer A (Assigning Interface to Security Zone):

You need to assign the interface ge-0/0/1.0 to the Local security zone. This is crucial because the SRX only applies security policies to interfaces assigned to security zones. Without this, traffic between devices in the Local zone won't be processed by security policies.

Configuration:

set security zones security-zone Local interfaces ge-0/0/1.0

Explanation of Answer B (Configuring Ethernet-Switching for VLAN 10):

Since we are using Layer 2 switching between devices in VLAN 10, we need to configure the interface to operate in Ethernet switching mode and assign it to VLAN 10.

Configuration:

set interfaces ge-0/0/1 unit 0 family ethernet-switching vlan-members 10

Explanation of Answer D (Transparent Bridging Mode for Layer 2):

The global mode for Layer 2 switching on the SRX device must be set to transparent-bridge. This ensures that the SRX operates in Layer 2 mode and can switch traffic between devices without routing.

Configuration:

set protocols l2-learning global-mode transparent-bridge

Summary:

Interface Assignment: Interface ge-0/0/1.0 is assigned to the Local zone to allow policy enforcement.

Ethernet-Switching: The interface is configured for Layer 2 Ethernet switching in VLAN 10.

Transparent Bridging: The SRX is configured in Layer 2 transparent-bridge mode for switching between devices.

Juniper Security Reference:

Layer 2 Bridging and Switching Overview: This mode allows the SRX to act as a Layer 2 switch for forwarding traffic between VLAN members without routing. Reference: Juniper Transparent Bridging Documentation.

Question 4

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?

AConfigure source NAT to translate return traffic from IPv4 address to the IPv6 address of your source device.

BConfigure proxy-ARP on the external IPv4 interface for the 10.10.201.10/32 address.

CConfigure proxy-NDP on the IPv6 interface for the 2001:db8::1/128 address.

DConfigure destination NAT to translate return traffic from the IPv4 address to the IPv6 address of your source device.

Answer : D

Question 5

You have deployed an SRX Series device at your network edge to secure Internet-bound sessions for your local hosts using source NAT. You want to ensure that your users are able to interact with applications on the Internet that require more than one TCP session for the same application session.

Which two features would satisfy this requirement? (Choose two.)

Aaddress persistence

BSTUN

Cpersistent NAT

Ddouble NAT

Answer : A, C

Address persistence ensures that the same NAT IP address is used for all sessions originating from a single source IP. Persistent NAT maintains connections for applications needing multiple sessions, like VoIP. Additional details are available in Juniper NAT Documentation.

For applications that require multiple TCP sessions for the same application session (such as VoIP or certain online games), the SRX device needs to handle NAT properly to maintain session continuity. Here's what helps:

Address Persistence (Answer A): Address persistence ensures that multiple sessions initiated by the same internal host are mapped to the same external IP address. This is crucial for applications that use multiple TCP sessions to maintain a stateful connection with the external server.

Command Example:

bash

set security nat source persistent-nat address-persistence

Persistent NAT (Answer C): This feature allows the external server to initiate new connections to the internal client using the same NAT translation. It's essential for applications that require consistent NAT mappings across multiple sessions.

Command Example:

bash

set security nat source persistent-nat permit target-host-port

These features ensure that applications with multiple TCP sessions work seamlessly across NAT.

Question 6

Click the Exhibit button.

Referring to the exhibit, which three actions do you need to take to isolate the hosts at the switch port level if they become infected with malware? (Choose three.)

AEnroll the SRX Series device with Juniper ATP Cloud.

BUse a third-party connector.

CDeploy Security Director with Policy Enforcer.

DConfigure AppTrack on the SRX Series device.

EDeploy Juniper Secure Analytics.

Answer : A, B, C

A. Enroll the SRX Series device with Juniper ATP Cloud. This is essential for the SRX to receive threat intelligence from ATP Cloud, enabling it to identify infected hosts and take action.

B. Use a third-party connector. In this specific scenario, a third-party connector is required to integrate the SRX with the third-party switch. While Juniper has native integration for its EX switches, a connector is necessary to communicate with and manage the third-party switch.

C. Deploy Security Director with Policy Enforcer. Security Director orchestrates the automated response, and Policy Enforcer translates the policies into device-specific commands for the SRX and the third-party switch (via the connector).

Question 7

You are asked to establish IBGP between two nodes, but the session is not established. To troubleshoot this problem, you configured trace options to monitor BGP protocol message exchanges.

Referring to the exhibit, which action would solve the problem?

AAdd the junos-host zone policy to permit the BGP packets.

BAdd a firewall filter to lo0 that permits the BGP packets.

CModify the security policy to permit the BGP packets.

DAdd BGP to the lo0 host-inbound-traffic configuration.

Answer : D

Juniper JN0-637 Security, Professional JNCIP-SEC Exam Practice Test