[2025年02月23日]QSA_New_V4練習試験問題集で試験99%合格率があります [Q22-Q43]

[2025年02月23日]QSA_New_V4練習試験問題集で試験99%合格率があります

最新の検証済みQSA_New_V4問題と解答、合格保証もしくは全額返金

質問 # 22
At which step in the payment transaction process does the merchant's bank pay the merchant for the purchase, and the cardholder's bank bill the cardholder?

• A. Clearing
• B. Chargeback
• C. Authorization
• D. Settlement

正解：D

解説：
Settlement in the Payment Process
* Settlement is the stage where the merchant's bank pays the merchant for the transaction, and the cardholder's bank debits the cardholder's account.
* PCI DSS does not explicitly describe the settlement process but emphasizes the protection of data during all stages.
Transaction Stages
* Authorization:Approves the transaction.
* Clearing:Data is sent to the cardholder's bank.
* Settlement:Funds are transferred between banks.
* Chargeback:Disputes are handled, and funds might be reversed.

質問 # 23
Which of the following statements Is true whenever a cryptographic key Is retired and replaced with a new key?

• A. The retired key must not be used for encryption operations.
• B. Cryptographic key components from the retired key must be retained for 3 months before disposal.
• C. Anew key custodian must be assigned.
• D. All data encrypted under the retired key must be securely destroyed.

正解：A

質問 # 24
Which of the following describes "stateful responses" to communication Initiated by a trusted network?

• A. A current baseline of application configurations is maintained and any mis-configuration is responded to promptly.
• B. Logs of user activity on the firewall are correlated to identify and respond to suspicious behavior.
• C. Administrative access to respond to requests to change the firewall Is limited to one individual at a time.
• D. Active network connections are tracked so that invalid "response" traffic can be identified.

正解：D

解説：
Stateful Inspection
* PCI DSS Requirement 1.2 specifies the need for stateful inspection to track the state of active connections. This ensures that only valid responses to communication initiated by trusted networks are allowed.
* Invalid or unsolicited response traffic is blocked to prevent exploitation of vulnerabilities.
Key Functionality of Stateful Firewalls
* Stateful firewalls maintain session information and only allow traffic that matches an existing session or expected response.
Incorrect Options
* Option A: Administrative access restrictions are important but unrelated to stateful responses.
* Option C: Baseline configurations are a different security control.
* Option D: Logging and correlation are for threat detection, not stateful response.

質問 # 25
Where an entity under assessment is using the customized approach, which of the following steps is the responsibility of the assessor?

• A. Derive testing procedures and document them in Appendix E of the ROC.
• B. Monitor the control.
• C. Perform the targeted risk analysis as per PCI DSS requirement 12.3.2.
• D. Document and maintain evidence about each customized control as defined in Appendix E of PCI DSS.

正解：D

解説：
Customized Approach Overview
* Appendix E of PCI DSS v4.0 outlines the customized approach, which allows entities to demonstrate their control effectiveness using methods that differ from the defined approach.
Assessor Responsibilities
* QSAs must document and maintain detailed evidence for each customized control implemented by the entity.
* Evidence must support how the customized control meets the security objectives of the original requirement.
Testing and Validation
* The QSA must perform validation to confirm the customized control's adequacy and effectiveness and ensure it sufficiently addresses the requirement's intent.
Documentation
* All findings, testing procedures, and conclusions must be recorded in the Report on Compliance (ROC) Appendix E, providing traceability and transparency.

質問 # 26
A retail merchant has a server room containing systems that store encrypted PAN data. The merchant has Implemented a badge access-control system that Identifies who entered and exited the room, on what date, and at what time. There are no video cameras located in the server room.Based on this information, which statement is true regarding PCI DSS physical security requirements?

• A. The badge access-control system must be protected from tampering or disabling.
• B. Data from the access-control system must be securely deleted on a monthly basis.
• C. The merchant must install motion-sensing alarms In addition to the existing access-control system.
• D. The merchant must Install video cameras in addition to the existing access-control system.

正解：A

解説：
Physical Security Requirements:
* PCI DSS Requirement 9.1.1 mandates that physical access control systems (like badge readers) must be protected against tampering or disabling to ensure continuous security.
Current Implementation:
* The merchant's badge access-control system provides essential logging of access events but must also be protected against tampering to comply with PCI DSS.
Invalid Options:
* B:Video cameras are recommended but not explicitly required if access controls effectively ensure security.
* C:Secure deletion of access-control logs is not a PCI DSS requirement; logs must be retained as per retention policies.
* D:Motion-sensing alarms are not mandatory under PCI DSS physical security requirements.

質問 # 27
A sample of business facilities is reviewed during the PCI DSS assessment. What is the assessor required to validate about the sample?

• A. It includes a consistent set of facilities that are reviewed for all assessments.
• B. Every facility where cardholder data is stored is reviewed.
• C. The number of facilities in the sample is at least 10 percent of the total number of facilities.
• D. All types and locations of facilities are represented.

正解：D

解説：
Sampling in Assessments
* PCI DSS v4.0 requires assessors to ensure that sampled business facilities represent all types and locations to provide comprehensive coverage of the entity's operations.
Sampling Considerations
* Assessors must include facilities storing or processing cardholder data and validate controls across diverse locations.
Incorrect Options
* Option A: Consistency does not ensure comprehensive representation.
* Option B: PCI DSS does not mandate a 10% sample size.
* Option C: It is not mandatory to review every facility storing cardholder data.

質問 # 28
The Intent of assigning a risk ranking to vulnerabilities Is to?

• A. Prioritize the highest risk items so they can be addressed more quickly.
• B. Replace the need for quarterly ASV scans.
• C. Ensure that critical security patches are installed at least quarterly
• D. Ensure all vulnerabilities are addressed within 30 days.

正解：A

解説：
Intent of Risk Ranking
* PCI DSS Requirement 6.3.2 requires that entities assign a risk ranking to vulnerabilities to prioritize remediation efforts.
* This ensures that the most critical vulnerabilities are addressed in a timely manner, reducing the risk to the CDE.
Practical Implementation
* Vulnerabilities are assessed based on potential impact and likelihood of exploitation, typically using industry-standard frameworks like CVSS.
* High-risk vulnerabilities may require immediate attention, while lower-priority issues are remediated per schedule.
Incorrect Options
* Option A: PCI DSS does not mandate a 30-day remediation window for all vulnerabilities; remediation timelines depend on risk.
* Option B: Quarterly ASV scans are still required even with risk ranking.
* Option D: Installing patches quarterly does not align with the dynamic prioritization of risks.

質問 # 29
Which statement about PAN is true?

• A. It must be protected with strong cryptography for transmission over private wireless networks.
• B. It does not require protection for transmission over public wireless networks.
• C. It does not require protection for transmission over public wired networks.
• D. It must be protected with strong cryptography tor transmission over private wired networks.

正解：A

解説：
PAN Transmission Protection
* PCI DSS Requirement 4.1 mandates strong cryptography for PAN during transmission over both public and private wireless networks to prevent unauthorized interception.
Incorrect Options
* Options B and D: PAN protection is not required for private wired networks.
* Option C: PAN must be protected during transmission over public wireless networks.

質問 # 30
Which statement is true regarding the presence of both hashed and truncated versions of the same PAN in an environment?

• A. The hashed and truncated versions must be correlated so the source PAN can be identified.
• B. The hashed version of the PAN must also be truncated per PCI DSS requirements for strong cryptography.
• C. Controls are needed to prevent the original PAN being exposed by the hashed and truncated versions.
• D. Hashed and truncated versions of a PAN must not exist in same environment.

正解：C

解説：
* Hashing and Truncation
* PCI DSS Requirement 3.4 mandates protecting stored PAN using methods like hashing and truncation. If both versions coexist, controls must ensure they cannot be combined to reconstruct the original PAN.
* Incorrect Options
* Option B: Truncation is unrelated to hashed PANs.
* Option C: Correlation of hashed and truncated versions to identify the PAN violates PCI DSS principles.
* Option D: Coexistence of hashed and truncated PANs is permissible if proper controls are in place.

質問 # 31
An entity wants to know if the Software Security Framework can be leveraged during their assessment.
Which of the following software types would this apply to?

• A. Software developed by the entity in accordance with the Secure SLC Standard.
• B. Any payment software In the CDE.
• C. Validated Payment Applications that are listed by PCI SSC and have undergone a PA-DSS assessment.
• D. Only software which runs on PCI PTS devices.

正解：A

解説：
Software Security Framework Overview
* PCI SSC's Software Security Framework (SSF) encompasses Secure Software Standard and Secure Software Lifecycle (Secure SLC) Standard.
* Software developed under the Secure SLC Standard adheres to security-by-design principles and can leverage the SSF during PCI DSS assessments.
Applicability
* The framework is primarily for software developed by entities or third parties adhering to PCI SSC standards.
* It does not apply to legacy payment software listed under PA-DSS unless migrated to SSF.
Incorrect Options
* Option A: Not all payment software qualifies; it must align with SSF requirements.
* Option B: PCI PTS devices are subject to different security requirements.
* Option C: PA-DSS-listed software does not automatically meet SSF standards without reassessment.

質問 # 32
Which of the following statements Is true whenever a cryptographic key Is retired and replaced with a new key?

• A. The retired key must not be used for encryption operations.
• B. Cryptographic key components from the retired key must be retained for 3 months before disposal.
• C. Anew key custodian must be assigned.
• D. All data encrypted under the retired key must be securely destroyed.

正解：A

解説：
Key Management Requirements:
* PCI DSS Requirement 3.6.5 specifies that when a cryptographic key is retired, it must no longer be used for encryption operations but may still be retained for decryption purposes as needed (e.g., to decrypt historical data until it is re-encrypted with the new key).
Secure Key Retirement:
* Retired keys should be securely stored or destroyed based on the organization's key management policy to prevent unauthorized access or misuse.
Reference in PCI DSS Documentation:
* Section 3.6.5 emphasizes that retired keys must be rendered inactive for further encryption while allowing use for decryption, ensuring data continuity and compliance.

質問 # 33
What does the PCI PTS standard cover?

• A. Development of strong cryptographic algorithms.
• B. End-lo-end encryption solutions for transmission of account data.
• C. Secure coding practices for commercial payment applications.
• D. Point-of-Interaction devices used to protect account data.

正解：D

解説：
PCI PIN Transaction Security (PTS) Standard:
* The PCI PTS standard focuses on securing Point-of-Interaction (POI) devices, such as payment terminals, that process payment card transactions and protect account data during capture.
Clarifications on Covered Areas:
* This standard includes specifications for physical and logical security controls to prevent unauthorized access to sensitive cardholder data on POI devices.
Invalid Options:
* B:Secure coding practices are addressed by PCI PA-DSS (Payment Application Data Security Standard).
* C:Cryptographic algorithm development is not specific to PCI PTS.
* D:End-to-end encryption solutions are not covered under PCI PTS.

質問 # 34
Which statement about the Attestation of Compliance (AOC) is correct?

• A. The AOC must be signed by both the merchant/service provider and by PCI SSC.
• B. There are different AOC templates for service providers and merchants.
• C. The AOC must be signed by either the merchant/service provider or the QSA/ISA.
• D. The same AOC template is used W ROCs and SAQs.

正解：B

解説：
Attestation of Compliance (AOC):
* The AOC is a document that confirms an entity's compliance with PCI DSS requirements. It is signed by the entity (merchant or service provider) and the Qualified Security Assessor (QSA) if a QSA is involved.
Different AOC Templates:
* PCI DSS provides distinct templates for service providers and merchants, tailored to their respective roles and responsibilities within the cardholder data environment (CDE).
Invalid Options:
* B:PCI SSC does not sign AOCs; they are signed by the merchant/service provider and the QSA.
* C:AOCs differ between ROCs and SAQs, so the same template is not universally used.
* D:Both the merchant/service provider and the QSA/ISA (Internal Security Assessor) must sign the AOC when applicable.

質問 # 35
Which statement is true regarding the PCI DSS Report on Compliance (ROC)?

• A. The ROC Reporting Template and instructions provided by PCI SSC should be used for all ROCs.
• B. The assessor may use either their own template or the ROC Reporting Template provided by PCI SSC.
• C. The ROC Reporting Template provided by PCI SSC is only required for service provider assessments.
• D. The assessor must create their own ROC template tor each assessment report.

正解：A

解説：
Mandatory ROC Template
* PCI DSS v4.0 mandates the use of the PCI SSC-provided ROC Template for all Reports on Compliance.
* This ensures standardization, completeness, and accuracy in documenting compliance assessments.
Sections of the ROC Template
* The ROC includes mandatory sections:
* Assessment Overview:General details, scope validation, and assessment findings.
* Findings and Observations:Detailed compliance status per requirement.
Prohibited Practices
* Assessors cannot use self-created ROC templates. Deviation from the PCI SSC-approved template may result in rejection of the report.
Key Changes in v4.0
* Enhanced focus on the integrity of reporting and inclusion of specific findings to ensure alignment with PCI DSS objectives.
* Added support for the customized approach within the ROC structure.

質問 # 36
Which of the following is true regarding internal vulnerability scans?

• A. They must be performed by an Approved Scanning Vendor (ASV).
• B. They must be performed after a significant change.
• C. They must be performed by QSA personnel.
• D. They must be performed at least annually.

正解：B

解説：
Comprehensive Detailed Step by Step Explanation with All PCI DSS and Qualified Security Assessor V4 References
* Relevant PCI DSS Requirement: Internal vulnerability scans are discussed under PCI DSS Requirement 11.3.1, which requires organizations to perform internal vulnerability scanning as part of their regular vulnerability management process.
* Frequency and Trigger for Internal Scans:
* PCI DSS v4.0 explicitly states that internal vulnerability scans should be conducted at least quarterly and after any significant change.
* A "significant change" can include modifications such as infrastructure upgrades, addition of new systems or software, and configuration changes that may impact security.
* Approved Scanning Vendor (ASV):
* Internal scans do not require an Approved Scanning Vendor (ASV). ASVs are specifically used for external vulnerability scans.
* Qualified Security Assessor (QSA) Involvement:
* QSAs are not mandated to perform internal scans. Organizations can use internal teams or trusted third-party resources for this purpose, provided the scans meet PCI DSS criteria.
* Annual Scanning Misconception:
* While annual compliance reports may include details of scanning activities, the requirement for internal scans is at least quarterly and event-triggered, not annually.
* Reference Verification:
* Requirement 11.3.1 (PCI DSS v4.0): Clearly outlines the need for quarterly scans and post- significant-change scans.
* ROC and SAQ Templates: Reinforce the requirement that scans are both regular and reactive to environmental changes.

質問 # 37
An organization wishes to implement multi-factor authentication for remote access, using the user's Individual password and a digital certificate. Which of the following scenarios would meet PCI DSS requirements for multi-factor authentication?

• A. Change control processes are In place to ensure certificates are changed every 90 days.
• B. A different certificate is assigned to each individual user account, and certificates are not shared.
• C. Certificates are logged so they can be retrieved when the employee leaves the company.
• D. Certificates are assigned only to administrative groups, and not to regular users.

正解：B

解説：
Multi-Factor Authentication (MFA)
* MFA requires at least two factors from different categories: something you know (password), something you have (digital certificate), or something you are (biometric).
* PCI DSS Requirement 8 mandates that credentials like certificates must be unique to each user.
Secure Certificate Use
* Certificates must not be shared and should be assigned individually to ensure accountability and prevent unauthorized access.
Incorrect Options
* Option A: Limiting certificates to administrative groups does not fulfill PCI DSS for all users.
* Option C: Logging certificates for retrieval is unrelated to security requirements.
* Option D: Certificates do not have a mandatory 90-day change requirement.

質問 # 38
A network firewall has been configured with the latest vendor security patches. What additional configuration Is needed to harden the firewall?

• A. Synchronize the firewall rules with the other firewalls in the environment.
• B. Configure the firewall to permit all traffic until additional rules are defined.
• C. Disable any firewall functions that are not needed in production.
• D. Remove the default "Firewall Administrator account and create a shared account for firewall administrators to use.

正解：C

解説：
Firewall Hardening:
* Requirement 1.2 mandates that firewalls should be configured with only the necessary functionality to reduce attack surfaces. Disabling unused functions eliminates potential vulnerabilities.
Explanation of Other Options:
* A:Shared accounts violate Requirement 8.1.5, which prohibits shared or generic accounts.
* B:Allowing all traffic initially violates Requirement 1.2.1, which requires a restrictive firewall policy.
* C:Synchronization of rules may not always be necessary, especially for firewalls with different scopes or roles.

質問 # 39
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