CompTIA Network+ N10-009 Practice Question

The use of checksums to verify data integrity during transmission ensures that the data has not been altered, thus maintaining the integrity of the information as defined in the CIA triad. Although backing up data regularly primarily addresses availability, and implementing role-based access controls supports confidentiality and integrity indirectly by controlling access, neither directly ensures integrity like checksums. Using encryption strengthens confidentiality primarily by encoding data to prevent unauthorized access.