QSA_New_V4 Exam Dumps - Qualified Security Assessor V4 Exam

PCI DSS allows for theuse of truncation and hashingfor protecting PAN, butRequirement 3.4.1and its guidance warn againstcombining hashed and truncated PANsin such a way that the original PAN could be reconstructed. If both formats exist,controls must ensurethey can't be used together to reverse-engineer the PAN.

Option A:✅Correct. Controls must ensure PAN cannot be reconstructed using both versions.

Option B:❌Incorrect. A hashed PAN does not need truncation — hashing is a separate mechanism.

Option C:❌Incorrect. PCI DSS aims to prevent correlation, not encourage it.

Option D:❌Incorrect. They can coexist, but must be secured so that PAN cannot be derived.

As specified underRequirement 11.5.2.1, comparisons of critical files (e.g., config files, executables) using change-detection mechanisms (e.g., FIM tools)must occur at least weekly. This ensures timely detection of unauthorized changes or tampering.

Option A:✅Correct. Weekly is theminimum frequencyrequired.

Option B:❌Incorrect. A defined "period" is not sufficient unless it's weekly or more frequent.

Option C:❌Incorrect. Scans should not wait for changes; they should detectunexpectedones.

Option D:❌Incorrect. Monthly is too infrequent for PCI DSS compliance.

According toSection 7 – Description of Timeframes Used in PCI DSS Requirements, the PCI DSS defines "quarterly" as:

“An activity performed once per calendar quarter (i.e., one time in each three-month period), or as close as reasonably possible to the calendar quarter.”

Option A:✅Correct. This aligns precisely with PCI DSS’s definition —once in each three-month calendar quarter.

Option B:❌Incorrect. PCI DSS doesnotdefine quarterly by a fixed number of days.

Option C & D:❌Incorrect. Specific dates or months are not prescribed.

PerRequirement 10.5.1.2, audit logs must be retained forat least one year, and the mostrecent three months must be readily availablefor analysis. This ensures traceability of security events over both short and longer-term periods.

Option A:✅Correct. Matches both duration and availability criteria.

Option B:❌Incorrect. Two years is not required.

Option C:❌Incorrect. The retention period is misstated.

Option D:❌Incorrect. One month is insufficient for immediate access.

PCI DSSRequirement 8.4.2requiresmulti-factor authentication (MFA)to consist of two or moreindependent authentication factors. MFA must alsonot involve shared credentials, so each certificate must be tied to a specific individual.

Option A:❌Incorrect. MFA must apply toall applicable users, not just admins.

Option B:✅Correct. This meets PCI DSS: unique credentials per user and non-shared certificates.

Option C:❌Incorrect. Retaining certificates post-employment is a risk, not a compliance action.

Option D:❌Incorrect. PCI DSS doesn’t mandate 90-day certificate rotation; rather, secure usage and revocation are key.

Requirement10.2.2mandates that all access to audit trails must be logged. This ensures that any tampering, viewing, or deletion of audit data is traceable. It supports the broader goal of maintaining audit trail integrity and accountability.

Option A:Incorrect. PCI DSS does not require logging use of end-user messaging.

Option B:Incorrect. There’s no explicit requirement to log access to external websites.

Option C:Correct. PCI DSS mandates loggingall access to audit trailsto detect and respond to unauthorised attempts.

Option D:Incorrect. Logging all network transmissions is not feasible and not required.

True segmentation, as defined inPCI DSS Scope Guidance, requiresenforcing isolationsuch thatno network traffic is allowed between the CDE and out-of-scope systems, unless explicitly permitted and secured. This is the only way toreduce assessment scopereliably.

Option A:❌Incorrect. Monitoring alone does not restrict or prevent access.

Option B:❌Incorrect. Logging without restriction doesnot isolatethe CDE.

Option C:❌Incorrect. VLANs may be part of segmentation, but routing traffic alone doesn't reduce scope.

Option D:✅Correct. This describesproper segmentation: no uncontrolled traffic into the CDE.

ï‚· 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​​.

ï‚· 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.

ï‚· 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.