2026年最新のお手軽に合格させる312-39試験にはこちらが提供する問題集PDFテストエンジン [Q50-Q69]

2026年最新のお手軽に合格させる312-39試験にはこちらが提供する問題集PDFテストエンジン

312-39のPDFで合格させるスゴ問題集で312-39最新のリアル試験問題

EC-Council 312-39（Certified SOC Analyst（CSA））認定試験は、サイバーセキュリティインシデントを効果的に処理する候補者の能力を実証するグローバルに認められた認定です。この認定は、SOC分析でキャリアを進めたいと考えているサイバーセキュリティの専門家に適しています。試験に合格するには、ネットワークセキュリティ、インシデント管理、コンピューターフォレンジックなど、さまざまな分野で徹底的な知識とスキルが必要です。

EC-COUNCIL 312-39試験は、認定SOC（セキュリティオペレーションセンター）アナリストになることを目指すプロフェッショナルのスキルと知識を評価するために設計された認定テストです。この認定は世界的に認められ、サイバーセキュリティ業界で高く評価されています。この試験は、候補者のセキュリティインシデントと脅威を検出、分析、対応する能力、およびセキュリティオペレーションセンターを管理および維持する能力をテストするように設計されています。

 

質問 # 50
Which of the following Windows Event Id will help you monitors file sharing across the network?

• A. 0
• B. 1
• C. 2
• D. 3

正解：D

解説：
The WindowsEvent ID 5140 is used to monitor file sharing across a network. This event is triggered every time a network share object is accessed, and it generates once per session when the first access attempt is made. It is part of the Audit File Share category and provides information about the access, including the user and device that accessed the share, the network address from which the access was made, and the name of the share that was accessed.
References:The information about Event ID 5140 can be found in the Microsoft documentation for Windows security auditing, specifically under the Advanced security audit policies related to Audit File Share1.
Reference: https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=5140

質問 # 51
A security analyst in a multinational corporation's Threat Intelligence team is tasked with enhancing detection of stealthy malware infections. During an investigation, the analyst observes an unusually high volume of DNS requests directed toward domains that follow patterns commonly associated with Domain Generation Algorithms (DGAs). Recognizing that these automated domain queries could indicate malware attempting to establish communication with command-and-control (C2) infrastructure, the analyst realizes existing detection may be insufficient. The security team needs to define intelligence requirements, including identifying critical data sources, refining detection criteria, and improving monitoring strategies. Which stage of the Cyber Threat Intelligence (CTI) process does this align with?

• A. Filtering CTI
• B. Automated tool
• C. Requirement analysis
• D. Intelligence buy-in

正解：C

解説：
This scenario aligns with requirement analysis because the team is defining what intelligence is needed and how it should be collected and used. The analyst has observed a problem (possible DGA-based malware activity) and recognizes gaps in current detection. The next step in a CTI lifecycle is to translate that concern into actionable intelligence requirements: which telemetry sources are necessary (DNS logs, proxy logs, endpoint telemetry, threat intel on DGA families), what questions must be answered (which hosts, what domains, what patterns, what time windows), and what success criteria look like (detection thresholds, false positive tolerance, enrichment needs). This is the "direction" phase of CTI, where priorities are set and collection needs are specified to ensure intelligence efforts align to threats that matter. "Filtering CTI" would be about reducing noise in collected intelligence or refining feeds after collection. "Intelligence buy-in" is stakeholder alignment and program support, not the analytic definition of requirements. "Automated tool" is not a CTI lifecycle stage. From a SOC perspective, requirement analysis is critical to turn observations into structured detection and hunting objectives that can be measured and improved.

質問 # 52
The Syslog message severity levels are labelled from level 0 to level 7.
What does level 0 indicate?

• A. Debugging
• B. Alert
• C. Emergency
• D. Notification

正解：C

解説：
In the Syslog protocol, severity levels are categorized from 0 to 7, with level 0 being the most severe. Level 0 indicates an "Emergency" situation which means the system is unusable. This level of severity is used for the most critical messages, often indicating a complete service or system shutdown.
References:
* EC-Council's Certified SOC Analyst (CSA) course materials, which cover the Syslog severity levels as part of the training1.
* InfraExam 2024, Certified SOC Analyst Part 01, which includes details on Syslog severity levels2.

質問 # 53
Which of the following formula is used to calculate the EPS of the organization?

• A. EPS = average number of correlated events / time in seconds
• B. EPS = number of security events / time in seconds
• C. EPS = number of normalized events / time in seconds
• D. EPS = number of correlated events / time in seconds

正解：D

解説：
In the context of a Security Operations Center (SOC), EPS typically refers to "Events Per Second," which is a measure of the number of security events processed in one second. The correct formula for calculating EPS in a SOC environment is the number of correlated events divided by the time in seconds. Correlated events are those that have been analyzed and aggregated by the SOC's security information and event management (SIEM) system, indicating a potential security incident. This metric helps in understanding the operational load and performance of the SOC.
References: The information is aligned with the EC-Council's Certified SOC Analyst (CSA) course material and best practices, which emphasize the importance of understanding and managing SOC operational metrics such as EPS for effective security monitoring and incident response12.

質問 # 54
Which of the following can help you eliminate the burden of investigating false positives?

• A. Ingesting the context data
• B. Not trusting the security devices
• C. Keeping default rules
• D. Treating every alert as high level

正解：A

解説：

質問 # 55
David Reynolds, a SOC analyst at a healthcare organization, is investigating suspicious login attempts flagged by the SIEM. To mitigate brute-force risk on targeted endpoints, he collaborates with IT to implement an automatic account lockout policy that temporarily disables accounts after multiple failed login attempts.
Within the SOC's eradication strategy, which category of measures does this action align with?

• A. Host security measures
• B. Authentication and authorization measures
• C. Physical security measures
• D. Network security measures

正解：B

解説：
Account lockout is an identity control that directly strengthens authentication by limiting repeated password guessing attempts. It sits within authentication and authorization measures because it governs how accounts can authenticate and how access is granted or denied based on login outcomes. In SOC terms, brute-force attacks target the authentication surface; lockout policies reduce attacker attempts and can prevent successful compromise by forcing a pause or administrative intervention after repeated failures. While the policy may be implemented on hosts or via directory services, its purpose is to control identity access behavior, not network segmentation or physical protections. Host security measures typically refer to endpoint hardening, patching, EDR controls, and local configuration baselines. Network security measures include firewall rules, segmentation, and traffic filtering. Physical security includes facility and device access controls. Because the action is specifically about controlling login attempts and access to accounts, it is best categorized as authentication and authorization. In practice, SOC teams complement lockout policies with MFA, conditional access, password spraying detection, and monitoring for "failures followed by success" patterns to reduce both brute-force success and user disruption.

質問 # 56
Banter is a threat analyst in Christine Group of Industries. As a part ofthe job, he is currently formatting and structuring the raw data.
He is at which stage of the threat intelligence life cycle?

• A. Collection
• B. Dissemination and Integration
• C. Analysis and Production
• D. Processing and Exploitation

正解：D

解説：
In thethreat intelligence life cycle, the stage of Processing and Exploitation involves the formatting and structuring of raw data. This is the phase where collected data is turned into a format that can be more easily analyzed and used. Banter, as a threat analyst, is engaged in this specific activity, which indicates that he is in the Processing and Exploitation stage. This stage is crucial as it prepares the data for further analysis and production of actionable intelligence.
References: The EC-Council's Certified Threat Intelligence Analyst (C|TIA) program outlines the threat intelligence life cycle and defines the Processing and Exploitation stage as the point where data is organized and prepared for analysis. This information is detailed in the EC-Council's official training and certification resources for the SOC Analyst role12.
Reference: https://socradar.io/5-stages-of-the-threat-intelligence-lifecycle/

質問 # 57
Emmanuel is working as a SOC analyst in a company named Tobey Tech. The manager of Tobey Tech recently recruited an Incident Response Team (IRT) for his company. In the process of collaboration with the IRT, Emmanuel just escalated an incident to the IRT.
What is the first step that the IRT will do to the incident escalated by Emmanuel?

• A. Incident Analysis and Validation
• B. Incident Recording
• C. Incident Prioritization
• D. Incident Classification

正解：D

質問 # 58
The Syslog message severity levels are labelled from level 0 to level 7.
What does level 0 indicate?

• A. Debugging
• B. Alert
• C. Notification
• D. Emergency

正解：C

質問 # 59
A SOC analyst monitors network traffic to detect potential data exfiltration. The team uses a security solution that inspects data packets in real time as they traverse the network. During incident response, the solution struggles to analyze encrypted traffic, limiting effectiveness in identifying threats hidden within secure communications. Which security control, with this known limitation, is the SOC team relying on?

• A. VPN
• B. SSH
• C. Packet filters
• D. IPsec

正解：C

解説：
Packet filters are a network security control that inspects packet headers (source/destination IP, ports, protocol flags) to allow or block traffic. Their known limitation is that they generally do not inspect encrypted payload content; they can see metadata but not the application-layer data inside TLS/SSL sessions. The scenario describes a solution that "inspects data packets in real time" but struggles with encrypted traffic, which aligns with packet filtering and other header-based inspection approaches. VPN, SSH, and IPsec are encryption technologies/protocols themselves, not the inspection control; they create encrypted tunnels that make payload inspection harder. From a SOC viewpoint, packet filtering is valuable for fast enforcement and reducing attack surface, but it is limited for detecting threats embedded in encrypted sessions. To improve visibility, SOC teams often complement packet filters with TLS termination at controlled points (proxies), endpoint telemetry (process initiating connection), and flow analytics (NetFlow/IPFIX) to detect anomalies in encrypted traffic based on behavior and metadata.

質問 # 60
In which log collection mechanism, the system or application sends log records either on the local disk or over the network.

• A. signature-based
• B. pull-based
• C. push-based
• D. rule-based

正解：D

質問 # 61
During a routine security audit, analysts discover several web servers still use a vulnerable third-party library flagged for a zero-day exploit. The vulnerability was identified previously and patches were deployed, but the application team rolled back patches due to instability and compatibility issues. The vulnerability remains unaddressed, and no alternative mitigations are in place. How should the security team classify this risk in the context of web application security?

• A. Software and data integrity failures
• B. Insecure design
• C. Vulnerable and outdated components
• D. Security logging and monitoring failures

正解：C

解説：
This is best classified as "Vulnerable and outdated components" because the organization is knowingly running a third-party library with a known exploitable vulnerability and has rolled back the available fix. In web application security, third-party dependencies are a major risk driver because attackers routinely target widely used frameworks and libraries, especially when exploit code becomes available or active exploitation is observed. Even if the rollback was motivated by stability, leaving the vulnerable component in production without compensating controls (WAF rules, disabling vulnerable functionality, strict input validation, segmentation) maintains high risk. Software and data integrity failures would focus on unauthorized changes or untrusted code deployment; the issue here is the presence of a known vulnerable dependency. Security logging/monitoring failures refer to insufficient visibility, not the root exposure. Insecure design refers to architectural weaknesses built into the application; while dependency management can be part of secure design, the immediate classification is the vulnerable component itself. From a SOC perspective, this classification drives remediation: prioritize patch-compatible fixes, upgrade dependency versions, implement compensating controls until patching is possible, and improve change management to prevent security rollback without risk acceptance and mitigation.

質問 # 62
Which of the following attack can be eradicated by disabling of "allow_url_fopen and allow_url_include" in the php.ini file?

• A. LDAP Injection Attacks
• B. Command Injection Attacks
• C. File Injection Attacks
• D. URL Injection Attacks

正解：C

解説：

質問 # 63
Identify the HTTP status codes that represents the server error.

• A. 4XX
• B. 5XX
• C. 1XX
• D. 2XX

正解：B

質問 # 64
Which of the following process refers to the discarding of the packets at the routing level without informing the source that the data did not reach its intended recipient?

• A. Black Hole Filtering
• B. Rate Limiting
• C. Load Balancing
• D. Drop Requests

正解：A

質問 # 65
Which of the following command is used to enable logging in iptables?

• A. $ iptables -A OUTPUT -j LOG
• B. $ iptables -B OUTPUT -j LOG
• C. $ iptables -B INPUT -j LOG
• D. $ iptables -A INPUT -j LOG

正解：A

質問 # 66
Ray is a SOC analyst in a company named Queens Tech. One Day, Queens Tech is affected by a DoS/DDoS attack. For the containment of this incident, Ray and his team are trying to provide additional bandwidth to the network devices and increasing the capacity of the servers.
What is Ray and his team doing?

• A. Diverting the Traffic
• B. Degrading the services
• C. Blocking the Attacks
• D. Absorbing the Attack

正解：D

解説：
When a SOC team, like the one Ray is part of, provides additional bandwidth to network devices and increases the capacity of servers in response to a DoS/DDoS attack, they are implementing a strategy known as 'absorbing the attack'. This approach involves scaling up resources to handle the increased load without disrupting normal services. Here's how it works:
* Increase Bandwidth: By increasing the bandwidth, the network can handle more traffic,which is essential when under a DoS/DDoS attack, as these attacks often flood the network with excessive traffic to overwhelm it.
* Enhance Server Capacity: Similarly, increasing server capacity allows the servers to handle more requests simultaneously. This is crucial during an attack to maintain service availability.
* Maintain Service Availability: The goal of this strategy is to keep services running and available to legitimate users, even when under attack.
* Monitor and Analyze: While absorbing the attack, it's important to monitor network traffic and analyze the attack patterns, which can help in future prevention and mitigation strategies.
References: This answer is aligned with the best practices for DoS/DDoS attack response as outlined in EC- Council's Certified SOC Analyst (CSA) training and certification program1234.
Please note that while I strive to provide accurate information, it's always best to consult the latest EC- Council SOC Analyst documents and learning resources for the most current and detailed guidance.

質問 # 67
A type of threat intelligent that find out the information about the attacker by misleading them is known as
.

• A. Operational Intelligence
• B. Counter Intelligence
• C. Detection Threat Intelligence
• D. Threat trending Intelligence

正解：A

質問 # 68
A rapidly growing e-commerce company wants to implement a SIEM solution to improve its security posture and comply with PCI DSS requirements. They need a solution that offers both the necessary technological features and the expertise to manage the system effectively. They also need continuous compliance support and data security assistance. Which SIEM solution is appropriate for this company?

• A. Cloud-based SIEM
• B. In-house SIEM
• C. Managed SIEM
• D. Security analytics

正解：C

解説：
A managed SIEM provides both the technology platform and the operational expertise to run it effectively, which aligns with the company's need for features plus ongoing management, compliance support, and security assistance. Rapidly growing organizations often struggle to staff SIEM engineering, content tuning, and 24/7 monitoring internally. Managed SIEM offerings typically include onboarding data sources, maintaining parsers, tuning detections, handling alert triage, producing compliance reports, and advising on remediation-capabilities that directly support PCI DSS requirements and continuous audit readiness. A cloud-based SIEM is a deployment model and can be part of the answer, but it does not guarantee expert management or compliance support unless paired with a managed service. An in-house SIEM requires building and maintaining internal expertise, which conflicts with the stated need for external expertise and continuous support. "Security analytics" is a capability category, not a full SIEM solution model. From a SOC operations standpoint, managed SIEM reduces time-to-value, improves alert quality through professional tuning, and provides consistent reporting and operational coverage without needing the company to immediately build a mature internal SOC function.

質問 # 69
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EC-Council Certified SOC Analyst（CSA）試験、または312-39試験は、セキュリティプロフェッショナルがセキュリティオペレーションセンター（SOC）分析分野における知識とスキルを検証するために設計された認定試験です。試験は、インシデント対応、脅威インテリジェンス、ネットワークセキュリティ監視など、幅広いトピックをカバーしています。認定は、セキュリティプロフェッショナルがセキュリティインシデントを管理し、脅威を検出して対応し、全体的なセキュリティポストを改善する能力を証明する業界公認の資格です。

 

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