QSA_New_V4 Dumps with Practice Exam Questions Answers

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​​.

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.

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.

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.

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.