QSA_New_V4練習問題集で検証済みで更新された42問題あります
更新されたQSA_New_V4試験問題集でPDF問題とテストエンジン
質問 # 18
Which statement is true regarding the use of intrusion detection techniques, such as intrusion detection systems and/or Intrusion protection systems (IDS/IPS)?
- A. Intrusion detection techniques are required to isolate systems in the cardholder data environment from all other systems
- B. Intrusion detection techniques are required to alert personnel of suspected compromises.
- C. Intrusion detection techniques are required to identify all instances of cardholder data.
- D. Intrusion detection techniques are required on all system components.
正解：B
解説：
PCI DSS Requirement:
* Requirement 11.4 mandates the implementation of intrusion detection and/or intrusion prevention techniques to alert personnel of suspected compromises within the cardholder data environment (CDE).
Purpose of IDS/IPS:
* These systems are deployed to identify potential threats and alert relevant personnel, enabling them to take corrective actions to prevent data breaches.
Rationale Behind Correct answer:
* A:Intrusion detection is required only for in-scope components, not all system components.
* C/D:Intrusion detection systems do not perform isolation or identification of all cardholder data; they monitor for and alert on potential intrusions.
質問 # 19
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. A different certificate is assigned to each individual user account, and certificates are not shared.
- B. Certificates are logged so they can be retrieved when the employee leaves the company.
- C. Change control processes are In place to ensure certificates are changed every 90 days.
- D. Certificates are assigned only to administrative groups, and not to regular users.
正解：A
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 # 20
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. The AOC must be signed by either the merchant/service provider or the QSA/ISA.
- C. The same AOC template is used W ROCs and SAQs.
- D. There are different AOC templates for service providers and merchants.
正解：D
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 # 21
Which statement about PAN is true?
- A. It does not require protection for transmission over public wireless networks.
- B. It must be protected with strong cryptography for transmission over private 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：B
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 # 22
An entity wants to use the Customized Approach. They are unsure how to complete the Controls Matrix or TRA. During the assessment, you spend time completing the Controls Matrix and the TRA, while also ensuring that the customized control is implemented securely. Which of the following statements is true?
- A. You must document the work on the customized control in the ROC, but you can not assess the control or the documentation.
- B. Assessors are not allowed to assist an entity with the completion of the Controls Matrix or the TRA.
- C. You can assess the customized control and verify that the customized approach was correctly followed, but you must document this in the ROC.
- D. You can assess the customized control, but another assessor must verify thatyou completed the TRA correctly.
正解：C
解説：
Customized Approach Overview:
* Under PCI DSS v4.0, entities can use a Customized Approach to meet requirements by implementing controls tailored to their environment. This allows flexibility while still achieving the intent of the security requirement.
Role of Assessors:
* Assessors (QSAs) are responsible for evaluating both the implementation of customized controls and ensuring these controls fulfill the security objectives of the PCI DSS requirements.
* QSAs must document the evaluation, evidence reviewed, and results in the Report on Compliance (ROC).
Controls Matrix and Targeted Risk Analysis (TRA):
* The Controls Matrix and TRA are key components of the Customized Approach. QSAs assist in verifying the accuracy and completeness of these tools during assessments.
Documenting in the ROC:
* The ROC must include a narrative explaining the assessor's findings regarding the customized control, validation methods, and any evidence collected.
Relevant PCI DSS v4.0 Guidance:
* Appendix D and E of the PCI DSS v4.0 ROC Template emphasize that QSAs can evaluate and confirm adherence to the Customized Approach provided this is documented comprehensively in the ROC.
質問 # 23
An entity accepts e-commerce payment card transactions and stores account data in a database. The database server and the web server are both accessible from the Internet. The database server and the web server are on separate physical servers. What is required for the entity to meet PCI DSS requirements?
- A. The database server should be relocated so that it is not accessible from untrusted networks.
- B. The web server should be moved into the Internal network.
- C. The web server and the database server should be installed on the same physical server.
- D. The database server should be moved to a separate segment from the web server to allow for more concurrent connections.
正解：A
解説：
Protecting the Database Server
* PCI DSS v4.0 requires that systems storing cardholder data, such as database servers, must not be directly accessible from untrusted networks (Requirement 1.3).
* The database server should be behind network security controls like firewalls and placed in a segmented network isolated from untrusted networks.
Segmentation Best Practices
* The web server, which interfaces with external users, can remain accessible from the Internet but should reside in a DMZ to prevent direct access to the internal network.
* This separation protects the database server from external threats while maintaining system functionality.
Incorrect Options
* Option A: Combining the web and database servers increases the attack surface and violates best practices.
* Option C: Moving the web server to the internal network exposes the internal environment.
* Option D: Segmentation is critical, but the reason is not solely to allow more concurrent connections.
質問 # 24
Could an entity use both the Customized Approach and the Defined Approach to meet the same requirement?
- A. Yes, if the entity uses no compensating controls.
- B. Yes, if the entity is eligible to use both approaches.
- C. No,because a single approach must be selected.
- D. No,because only compensating controls can be used with the Defined Approach.
正解：B
解説：
Dual Approach Flexibility:
* PCI DSS allows entities to use both the Defined Approach and the Customized Approach for the same requirement if eligible and documented appropriately. This can provide flexibility in addressing complex environments.
Clarifications on Valid Options:
* A:Entities are not restricted to a single approach.
* B:Compensating controls are unrelated to the choice of approach.
* C:Entities can use compensating controls if applicable and justified.
Documentation and Assessment:
* Both approaches must be properly documented and validated in the Report on Compliance (ROC), with clear evidence demonstrating compliance.
質問 # 25
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 merchant must install motion-sensing alarms In addition to the existing access-control system.
- B. The badge access-control system must be protected from tampering or disabling.
- C. The merchant must Install video cameras in addition to the existing access-control system.
- D. Data from the access-control system must be securely deleted on a monthly basis.
正解：B
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 # 26
What isthe intent of classifying media that contains cardholder data?
- A. Ensuring that media is properly protected according to the sensitivity of the data it contains.
- B. Ensuring that media containing cardholder data Is moved from secured areas an a quarterly basis.
- C. Ensuring that media is clearly and visibly labeled as "Confidential" so all personnel know that the media contains cardholder data.
- D. Ensuring that all media is consistently destroyed on the same schedule, regardless of the contents.
正解：A
解説：
Purpose of Classifying Media
* PCI DSS v4.0 emphasizes the need to classify media based on the sensitivity of the data it contains.
Media classification ensures appropriate handling, storage, and destruction processes.
Media Protection Requirements
* Media containing cardholder data must be securely stored, transferred, and destroyed when no longer needed.
* Classification informs the level of protection required, such as encryption, physical security, or controlled access.
Incorrect Options
* Option B: Moving media quarterly is not a requirement.
* Option C: Labeling as "Confidential" is insufficient without a comprehensive protection strategy.
* Option D: Destruction schedules should depend on retention requirements and data sensitivity, not a universal timeline.
質問 # 27
An organization has implemented a change-detection mechanism on their systems. How often must critical file comparisons be performed?
- A. At least monthly
- B. Only after a valid change is installed
- C. Periodically as defined by the entity
- D. At least weekly
正解：D
解説：
PCI DSS Requirement for File Integrity Monitoring (FIM):
* Requirement 11.5 mandates the use of file integrity monitoring to detect unauthorized changes to critical files, and comparisons must be performed at least weekly unless otherwise defined and justified in the entity's risk assessment.
Purpose of Weekly Comparisons:
* Ensures timely detection of unauthorized modifications, reducing the risk of compromise.
Invalid Options:
* B/D:These timeframes are not specific to PCI DSS unless documented as part of a risk-based approach.
* C:Comparisons must occur regularly, not just after changes are installed.
質問 # 28
Which scenario describes segmentation of the cardholder data environment (CDE) for the purposes of reducing PCI DSS scope?
- A. Firewalls that log all network traffic flows between the CDE and out-of-scope networks.
- B. Routers that monitor network traffic flows between the CDE and out-of-scope networks.
- C. A network configuration that prevents all network traffic between the CDE and out-of-scope networks.
- D. Virtual LANs that route network traffic between the CDE and out-of-scope networks.
正解：C
解説：
Segmentation Defined
* PCI DSS v4.0 specifies that effective segmentation separates the CDE from out-of-scope environments, minimizing the risk of unauthorized access to cardholder data.
Key Requirements for Segmentation
* Network traffic between the CDE and out-of-scope networks must be completely prevented. This ensures that out-of-scope systems cannot introduce risks to the CDE.
* Methods like firewalls, ACLs (Access Control Lists), and other technologies may be used to enforce segmentation.
Incorrect Options
* Monitoring or logging traffic (Options A and B) without preventing access does not achieve segmentation.
* Virtual LANs (Option C) alone are insufficient unless properly configured to enforce traffic isolation.
質問 # 29
In the ROC Reporting Template, which of the following Is the best approach for a response where the requirement was "In Place'?
- A. Details of the entity's reason for not implementing the requirement
- B. Details of how the assessor observed the entity's systems were compliant with the requirement.
- C. Details of the entity's project plan for implementing the requirement.
- D. Details of how the assessor observed the entity's systems were not compliant with the requirement
正解：B
解説：
PCI DSS Reporting Expectations:
* When documenting that a requirement is "In Place," the ROC must clearly describe how compliance was validated by the assessor. This involves detailing the evidence observed, such as system configurations, documentation, and personnel interviews.
ROC Documentation Guidelines:
* The ROC Reporting Template specifies that each "In Place" response must include evidence demonstrating compliance with the requirement, such as testing observations and validation of implemented controls.
Eliminating Incorrect Options:
* A:Project plans are not sufficient to demonstrate current compliance.
* C/D:Responses discussing non-implementation or non-compliance are irrelevant when the requirement is "In Place." PCI DSS v4.0 ROC Template Guidance:
* Appendix sections in the ROC provide specific instructions for assessors to document the testing performed, evidence reviewed, and results.
質問 # 30
Which of the following file types must be monitored by a change-detection mechanism (for example, a file- integrity monitoring tool)?
- A. Application vendor manuals
- B. Security policy and procedure documents
- C. Files that regularly change
- D. System configuration and parameter files
正解：D
解説：
Scope of Change-Detection Mechanisms
* PCI DSS v4.0 requires the implementation of a change-detection mechanism (e.g., file-integrity monitoring) to monitor unauthorized changes to critical files.
* Critical files include system configuration and parameter files, application executable files, and scripts used in administrative functions.
Intent of Monitoring System Files
* These files often control security settings and operational parameters of systems within the Cardholder Data Environment (CDE). Unauthorized changes could compromise system security.
Exclusions
* Documents like application vendor manuals and security policies do not qualify as files requiring integrity monitoring since they do not directly impact the security posture or operational functions of systems in the CDE.
質問 # 31
Which of the following meets the definition of "quarterly" as Indicated In the description of timeframes used In PCI DSS requirements?
- A. On the 15th of each third month.
- B. Occurring at some point in each quarter of a year.
- C. At least once every 95-97 days
- D. On the 1st of each fourth month.
正解：B
解説：
Definition of Quarterly:
* PCI DSS defines "quarterly" as occurring once within each calendar quarter. This means the activity must happen at least once in Q1, Q2, Q3, and Q4, with no rigid restrictions on specific days.
Clarification on Other Options:
* B:While 95-97 days approximates a quarter, it is not mandated as a rigid timeframe.
* C/D:Fixed dates (e.g., 15th or 1st of specific months) are not prescribed in PCI DSS.
質問 # 32
Security policies and operational procedures should be?
- A. Distributed to and understood by ail affected parties.
- B. Stored securely so that only management has access.
- C. Encrypted with strong cryptography.
- D. Reviewed and updated at least quarterly.
正解：A
解説：
Requirement Context:
* PCI DSS Requirement 12.5 mandates that security policies and operational procedures are not only documented but also distributed to relevant parties to ensure clarity and compliance.
Importance of Distribution and Awareness:
* All affected parties, including employees, contractors, and third parties with access to the cardholder data environment (CDE), must receive and understand the policies. This ensures they adhere to the security measures.
Review and Updates:
* Security policies must be kept up to date and reviewed at least annually or after significant changes in the environment. While other options such as encryption or restricted access are important for security, the critical focus is on distribution and awareness to ensure operational effectiveness.
Testing and Validation:
* During assessments, QSAs validate the implementation by examining training records, communication logs, and acknowledgment forms signed by affected parties.
Relevant PCI DSS v4.0 Guidance:
* Section 12.5.1 of PCI DSS v4.0 outlines that the dissemination of policies must ensure that all personnel understand their roles in securing the environment.
質問 # 33
Which scenario meets PCI DSS requirements for critical systems to have correct and consistent time?
- A. Central time servers receive time signals from specific, approved external sources.
- B. Each internal system peers directly with an external source to ensure accuracy of time updates.
- C. Access to time configuration settings is available to all users of the system.
- D. Each Internal system Is configured to be Its own time server.
正解：A
解説：
Time Synchronization Standards:
* PCI DSS Requirement 10.4 mandates that all critical systems use a centralized time server to ensure time accuracy across systems. Approved external sources provide a reliable and consistent time signal.
Correctness and Consistency of Time:
* Using a central time server ensures uniformity of timestamps, which is critical for forensic analysis, log correlation, and monitoring activities.
Invalid Options:
* A:Internal systems acting as their own servers could lead to inconsistent timestamps.
* B:Allowing all users access to time settings poses a security risk.
* D:Peering directly with external sources bypasses centralized control, violating consistency requirements.
質問 # 34
Viewing of audit log files should be limited to?
- A. Individuals with read/write access.
- B. Individuals with administrator privileges.
- C. Individuals with a job-related need.
- D. Individuals who performed the logged activity.
正解：C
解説：
Audit Log Access Control:
* PCI DSS Requirement 10.7 restricts access to audit logs to individuals with a job-related need to protect the integrity and confidentiality of the logs.
Rationale for Job-Related Need:
* Limiting access reduces the risk of tampering, accidental modification, or exposure of sensitive information.
Invalid Options:
* A:Individuals who performed the activity should not necessarily view logs unless required.
* B/C:Read/write access or administrator privileges are not prerequisites for log viewing.
質問 # 35
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