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Which of the following BEST protects the credit card data?

A merchant acquirer has the need to store credit card numbers in a transactional database in a
high performance environment. Which of the following BEST protects the credit card data?

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A.
Database field encryption

B.
File-level encryption

C.
Data loss prevention system

D.
Full disk encryption

Explanation:
Database encryption makes use of cryptography functions that are built into the database software
to encrypt the data stored in the data base. This often offers granular encryption options which
allows for the encryptions of the entire database, specific database tables, or specific database
fields, such as a credit card number field.


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