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Juniper JN0-231認定試験は、グローバルに認められたベンダーニュートラルの認定試験です。この試験は、候補者のネットワークセキュリティに関する知識とスキルを総合的に評価するものです。この認定は、キャリアの見通しを向上させ、ネットワークセキュリティの知識を深めたいIT専門家に最適です。この認定試験は、他のJuniper認定の基礎となるエントリーレベルの試験であり、Juniper Networksのデバイスと技術を扱いたい専門家にとって必須の要件です。Juniper JN0-231認定を取得することで、個人はネットワークセキュリティに関する専門知識と能力を証明し、求人市場で目立つことができ、キャリアを進めることができます。
Juniper JN0-231試験は、セキュリティコンセプト、セキュリティポリシー、セキュリティゾーン、NAT、IPsec VPN、UTM、SRXシリーズデバイスなど、幅広いトピックをカバーしています。この試験は、Junos OSデバイスの設定とトラブルシューティングにおける候補者の知識と実践的なスキルをテストする、多肢選択問題とシミュレーションから構成されています。試験は英語、日本語、簡体字中国語など、複数の言語で利用可能です。
質問 # 36
Which two addresses are valid address book entries? (Choose two.)
- A. 191.168.203.0/24
- B. 153.146.0.145/255.255.0.255
- C. 203.150.108.10/24
- D. 173.145.5.21/255.255.255.0
正解：C、D
解説：
The correct address book entries are:
173.145.5.21/255.255.255.0
203.150.108.10/24
Both of these entries represent a valid IP address and subnet mask combination, which can be used as an address book entry in a Juniper device.
質問 # 37
An application firewall processes the first packet in a session for which the application has not yet been identified.
In this scenario, which action does the application firewall take on the packet?
- A. It denies the first packet.
- B. It denies the first packet and sends an error message to the user.
- C. It allows the first packet.
- D. It holds the first packet until the application is identified.
正解：D
解説：
This is necessary to ensure that the application firewall can properly identify the application and the correct security policies can be applied before allowing any traffic to pass through.
If the first packet was allowed to pass without first being identified, then the application firewall would not know which security policies to apply - and this could potentially lead to security vulnerabilities or breaches. So it's important that the first packet is held until the application is identified.
質問 # 38
Click the Exhibit button.
What is the purpose of the host-inbound-traffic configuration shown in the exhibit?
- A. to permit host inbound HTTP traffic and deny all other traffic on the internal security zone
- B. to permit host inbound HTTP traffic on the internal security zone
- C. to permit all host inbound traffic on the internal security zone, but deny HTTP traffic
- D. to deny and log all host inbound traffic on the internal security zone, except for HTTP traffic
正解：C
質問 # 39
Which two actions are performed on an incoming packet matching an existing session? (Choose two.)
- A. Screens processing
- B. Service ALG processing
- C. Zone processing
- D. Security policy evolution
正解：A、B
質問 # 40
Which feature would you use to protect clients connected to an SRX Series device from a SYN flood attack?
- A. application layer gateway
- B. security policy
- C. host inbound traffic
- D. screen option
正解：D
解説：
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
質問 # 41
Click the Exhibit button.
Referring to the exhibit, a user is placed in which hierarchy when the exit command is run?
- A. [edit security policies from-zone trust to-zone dmz]
user@vSRX-1# - B. [edit]
user@vSRX-1# - C. [edit security policies]
user@vSRX-1# - D. user@vSRX-1>
正解：C
質問 # 42
You are concerned that unauthorized traffic is using non-standardized ports on your network.
In this scenario, which type of security feature should you implement?
- A. Application firewall
- B. Firewall filters
- C. Zone-based policies
- D. Sky ATP
正解：A
質問 # 43
Which three actions would be performed on traffic traversing an IPsec VPAN? (Choose three.)
- A. Encryption
- B. Deep inspection
- C. Port forwarding
- D. Payload verification
- E. Authentication
正解：A、D、E
質問 # 44
When are Unified Threat Management services performed in a packet flow?
- A. only during the first path process
- B. before security policies are evaluated
- C. as the packet enters an SRX Series device
- D. after network address translation
正解：D
解説：
https://iosonounrouter.wordpress.com/2018/07/07/how-does-a-flow-based-srx-work/
質問 # 45
Which IPsec protocol is used to encrypt the data payload?
- A. TCP
- B. ESP
- C. IKE
- D. AH
正解：B
質問 # 46
Which two match conditions would be used in both static NAT and destination NAT rule sets? (Choose two.)
- A. Destination interface
- B. Source interface
- C. Source zone
- D. Destination zone
正解：A、C
質問 # 47
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. unified security policies
- B. Geo IP
- C. IDP
- D. C&C feed
正解：B
質問 # 48
Which two statements are correct about security zones? (choose two)
- A. Security zones use security policies that enforce rules for the transit traffic
- B. Security zones use packet filters to prevent communication between management ports
- C. Security zones use address books to link username to IP addresses.
- D. Security zones use a stateful firewall to provide secure network connections
正解：A、D
質問 # 49
Click the Exhibit button.
Which two user roles shown in the exhibit are available be defaults? (choose two)
- A. Operator
- B. Admin
- C. Super-user
- D. Jtac
正解：A、C
質問 # 50
What does IPsec use to negotiate encryption algorithms?
- A. TLS
- B. ESP
- C. IKE
- D. AH
正解：B
質問 # 51
You are installing a new SRX Series device and you are only provided one IP address from your ISP.
In this scenario, which NAT solution would you implement?
- A. interface-based source NAT
- B. pool-based NAT without PAT
- C. pool-based NAT with address shifting
- D. pool-based NAT with PAT
正解：A
質問 # 52
Which two criteria should a zone-based security policy include? (Choose two.)
- A. a destination port
- B. a source port
- C. zone context
- D. an action
正解：A、D
質問 # 53
What are two Juniper ATP Cloud feed analysis components? (Choose two.)
- A. IDP signature feed
- B. C&C cloud feed
- C. infected host cloud feed
- D. US CERT threat feed
正解：A、B
解説：
The Juniper ATP Cloud feed analysis components are the IDP signature feed and the C&C cloud feed. The IDP signature feed provides a database of signatures from known malicious traffic, while the C&C cloud feed provides the IP addresses of known command and control servers. The infected host cloud feed and US CERT threat feed are not components of the Juniper ATP Cloud feed analysis.
To learn more about the Juniper ATP Cloud feed analysis components, refer to the Juniper Networks Security Automation and Orchestration (SAO) official documentation, which can be found at https://www.juniper.net/documentation/en_US/sao/topics/concept/security-automation-and-orchestration-overview.html. The documentation provides an overview of the SAO platform and an in-depth look at the various components of the Juniper ATP Cloud feed analysis.
質問 # 54
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. screens
- B. Juniper ATP
- C. 802.1X
- D. integrated user firewall
正解：B
解説：
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.
質問 # 55
On an SRX device, you want to regulate traffic base on network segments.
In this scenario, what do you configure to accomplish this task?
- A. Zones
- B. ALGs
- C. NAT
- D. Screens
正解：A
質問 # 56
Which two statements are true regarding zone-based security policies? (Choose two.)
- A. Zone-based policies must reference a dynamic application in the match criteria.
- B. Zone-based policies must reference a URL category in the match criteria.
- C. Zone-based policies must reference a source address in the match criteria.
- D. Zone-based policies must reference a destination address in the match criteria
正解：C、D
質問 # 57
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Security, Associate (JNCIA-SEC)認証サンプル問題と練習試験：https://jp.fast2test.com/JN0-231-premium-file.html
リアルな試験問題と解答でJuniper JN0-231問題集が待ってます：https://drive.google.com/open?id=1asCq9g4-9KHBBg3PtqnV--Y9gmUfEddk