Why A is correct
Requirement 4 mandates that cardholder data be encrypted when transmitted over open, public networks to prevent interception by unauthorized parties.
Know someone studying for PCI DSS? Send them this one.
Cardholder Data
Covers cardholder data concepts and practices within PCI DSS.
This question belongs to the "Protect Cardholder Data" domain, which makes up about 20% of the PCI DSS exam.
Solve. Learn. Rank. Get Hired.
CyberCertPrep gives you 20 free PCI DSS questions per day with this same answer-and-explanation depth, plus timed exam simulations and progress tracking. No card required.
PCI DSS and PCI SSC are trademarks or registered trademarks of their respective owners. CyberCertPrep is an independent exam-preparation resource and is not affiliated with, authorized by, sponsored by, or endorsed by PCI SSC or any other certification body. All study material is independently created; the certification name is used only to identify the exam this resource helps you prepare for.