JN0-231 : Security - Associate (JNCIA-SEC) Exam

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Juniper
JN0-231
Security - Associate (JNCIA-SEC)
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Question: 26
You want to verify the peer before IPsec tunnel establishment.
What would be used as a final check in this scenario?
A. traffic selector
B. perfect forward secrecy
C. st0 interfaces
D. proxy ID
Answer: D
Explanation:
The proxy ID is used as a final check to verify the peer before IPsec tunnel establishment. The proxy ID is a
combination of local and remote subnet and protocol, and it is used to match the traffic that is to be encrypted. If the
proxy IDs match between the two IPsec peers, the IPsec tunnel is established, and the traffic is encrypted.
Reference:
Juniper Networks SRX Series Services Gateway IPsec Configuration Guide:
https://www.juniper.net/documentation/en_US/release-independent/junos/topics/topic-map/security-ipsec-vpn-
configuring.html
Question: 27
Which feature would you use to protect clients connected to an SRX Series device from a SYN flood attack?
A. security policy
B. host inbound traffic
C. application layer gateway
D. screen option
Answer: D
Explanation:
A screen option in the SRX Series device can be used to protect clients connected to the device from a SYN flood
attack. Screens are security measures that you can use to protect your network from various types of attacks, including
SYN floods. A screen option specifies a set of rules to match against incoming packets, and it can take specific actions
such as discarding, logging, or allowing the packets based on the rules.
Reference:
Juniper Networks SRX Series Services Gateway Screen Configuration Guide:
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/security-screen-configuring.html
Question: 28
What is the main purpose of using screens on an SRX Series device?
A. to provide multiple ports for accessing security zones
B. to provide an alternative interface into the CLI
C. to provide protection against common DoS attacks
D. to provide information about traffic patterns traversing the network
Answer: C
Explanation:
The main purpose of using screens on an SRX Series device is to provide protection against common Denial of Service
(DoS) attacks. Screens help prevent network resources from being exhausted or unavailable by filtering or blocking
network traffic based on predefined rules. The screens are implemented as part of the firewall function on the SRX
Series device, and they help protect against various types of DoS attacks, such as TCP SYN floods, ICMP floods, and
UDP floods.
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/security-srx-series-firewall-screen-
dos.html
Question: 29
You want to implement user-based enforcement of security policies without the requirement of certificates and
supplicant software.
Which security feature should you implement in this scenario?
A. integrated user firewall
B. screens
C. 802.1X
D. Juniper ATP
Answer: D
Explanation:
In this scenario, you should implement Juniper ATP (Advanced Threat Prevention). Juniper ATP provides user-based
enforcement of security policies without the requirement of certificates and supplicant software. It uses a combination
of behavioral analytics, sandboxing, and threat intelligence to detect and respond to advanced threats in real time.
Juniper ATP provides robust protection against targeted attacks, malicious insiders, and zero-day malware. For more
information, please refer to the Juniper ATP product page on Juniper's website.
Question: 30
You want to block executable files ("exe) from being downloaded onto your network.
Which UTM feature would you use in this scenario?
A. IPS
B. Web filtering
C. content filtering
D. antivirus
Answer: B
Explanation:
According to the Juniper Networks official JNCIA-SEC Exam Guide, web filtering is a feature used to control access
to web content, including the ability to block specific types of files.
In the scenario mentioned, you want to block executable files from being downloaded, which can be accomplished by
using web filtering. The feature allows administrators to configure policies that block specific file types, including
"exe" files, from being downloaded.
Reference:
Juniper Networks JNCIA-SEC Exam Guide: https://www.juniper.net/training/certification/certification-exam-
guides/jncia-sec-exam-guide/
Question: 31
Which statement about service objects is correct?
A. All applications are predefined by Junos.
B. All applications are custom defined by the administrator.
C. All applications are either custom or Junos defined.
D. All applications in service objects are not available on the vSRX Series device.
Answer: C
Explanation:
"Service objects represent applications and services that can be assigned to a security policy rule. Applications and
services can either be predefined by Junos software or custom defined by the administrator."
Reference:
Juniper Networks JNCIA-SEC Exam Guide: https://www.juniper.net/training/certification/certification-exam-
guides/jncia-sec-exam-guide/
Question: 32
You need to collect the serial number of an SRX Series device to replace it.
Which command will accomplish this task?
A. show chassis hardware
B. show system information
C. show chassis firmware
D. show chassis environment
Answer: A
Explanation:
The correct command to collect the serial number of an SRX Series device is the show chassis hardware command [1].
This command will return the serial number of the device, along with other information about the device such as the
model number, part number, and version.
This command is available in Junos OS. More information about the show chassis hardware command can be found in
the Juniper Networks technical documentation here [1]:
https://www.juniper.net/documentation/en_US/junos/topics/reference/command-summary/show-chassis-hardware.html.
Question: 33
In J-Web. the management and loopback address configuration option allows you to configure which area?
A. the IP address of the primary Gigabit Ethernet port
B. the IP address of the Network Time Protocol server
C. the CIDR address
D. the IP address of the device management port
Answer: D
Explanation:
J-Web is a web-based interface for configuring and managing Juniper devices. The management and loopback address
configuration option in J-Web allows you to configure the IP address of the device management port, which is used to
remotely access and manage the device.
Question: 34
Your company is adding IP cameras to your facility to increase physical security. You are asked to help protect these
loT devices from becoming zombies in a DDoS attack.
Which Juniper ATP feature should you configure to accomplish this task?
A. IPsec
B. static NAT
C. allowlists
D. C&C feeds
Answer: D
Explanation:
Juniper ATP should be configured with C&C feeds that contain lists of malicious domains and IP addresses in order to
prevent IP cameras from becoming zombies in a DDoS attack.
This is an important step to ensure that the IP cameras are protected from malicious requests - and thus, they will not
be able to be used in any DDoS attacks against the facility.
Question: 35
You want to provide remote access to an internal development environment for 10 remote developers.
Which two components are required to implement Juniper Secure Connect to satisfy this requirement? (Choose two.)
A. an additional license for an SRX Series device
B. Juniper Secure Connect client software
C. an SRX Series device with an SPC3 services card
D. Marvis virtual network assistant
Answer: A,B
Question: 36
What are two functions of Juniper ATP Cloud? (Choose two.)
A. malware inspection
B. Web content filtering
C. DDoS protection
D. Geo IP feeds
Answer: A,D
Explanation:
Juniper Advanced Threat Prevention (ATP) Cloud is a security service that helps organizations protect against
advanced threats by providing real-time threat intelligence and automated response capabilities. It combines a cloud-
based threat intelligence platform with the security capabilities of Juniper Networks security devices to provide
comprehensive protection against advanced threats. The two functions of Juniper ATP Cloud include malware
inspection and Geo IP feeds. The malware inspection component provides real-time protection against known and
unknown threats by analyzing suspicious files and determining if they are malicious. The Geo IP feeds provide a
global view of IP addresses and their associated countries, allowing organizations to identify and block traffic from
known malicious countries.
Question: 37
You must monitor security policies on SRX Series devices dispersed throughout locations in your organization using a
'single pane of glass' cloud-based solution.
Which solution satisfies the requirement?
A. Juniper Sky Enterprise
B. J-Web
C. Junos Secure Connect
D. Junos Space
Answer: D
Explanation:
Junos Space is a management platform that provides a single pane of glass view of SRX Series devices dispersed
throughout locations in your organization. It provides visibility into the security policies of the devices, allowing you to
quickly identify and respond to security threats. Additionally, it provides the ability to manage multiple devices
remotely and in real-time, enabling you to quickly deploy and update security policies on all devices. For more
information, please refer to the Juniper Networks Junos Space Network Director User Guide, which can be found on
Juniper's website.
Question: 38
You are asked to configure your SRX Series device to block all traffic from certain countries. The solution must be
automatically updated as IP prefixes become allocated to those certain countries.
Which Juniper ATP solution will accomplish this task?
A. Geo IP
B. unified security policies
C. IDP
D. C&C feed
Answer: A
Question: 39
What is the order of the first path packet processing when a packet enters a device?
A. security policies C> screens C> zones
B. screens C> security policies C> zones
C. screens C> zones C> security policies
D. security policies C> zones C> screens
Answer: C
Question: 40
You are asked to verify that a license for AppSecure is installed on an SRX Series device.
In this scenario, which command will provide you with the required information?
A. user@srx> show system license
B. user@srx> show services accounting
C. user@srx> show configuration system
D. user@srx> show chassis firmware
Answer: A

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