Question

An IS auditor is reviewing an automated nightly interface that transfers a consolidated transaction file from a branch banking application to the central core system. The auditor wants assurance that the file received by the core system is complete and has not been altered in transit. Which control would BEST provide this assurance?

Accepted Answer

A cryptographic hash total calculated at the source and independently recomputed and compared at the destination

Answer

A job scheduler that automatically retries the transfer if the initial transmission fails

Answer

Encryption of the file during transmission using a secure tunnel

Answer

A sequential naming convention that timestamps each transferred file