CISA · Question #131
The purpose of a checksum on an amount field in an electronic data interchange (EDI) communication of financial transactions is to ensure:
The correct answer is B. integrity. A checksum is a mathematical value calculated from a data field (such as a sum of all transaction amounts) that allows the receiver to verify the data has not been altered or corrupted in transit. This is the definition of data integrity-ensuring data remains complete and…
Question
The purpose of a checksum on an amount field in an electronic data interchange (EDI) communication of financial transactions is to ensure:
Options
- Aauthorization.
- Bintegrity.
- Cnonrepudiation.
- Dauthenticity.
How the community answered
(23 responses)- A4% (1)
- B91% (21)
- C4% (1)
Explanation
A checksum is a mathematical value calculated from a data field (such as a sum of all transaction amounts) that allows the receiver to verify the data has not been altered or corrupted in transit. This is the definition of data integrity-ensuring data remains complete and unmodified. Authorization (A) controls who can initiate or approve transactions. Nonrepudiation (C) prevents a sender from denying they sent a message, typically achieved through digital signatures. Authenticity (D) confirms the identity of the sender. A checksum alone provides none of those properties-it only detects unintended or unauthorized changes to the data values.
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