Free CompTIA Network+ N10-009 Practice Question

Using hash functions is the best measure to support integrity as they generate a fixed-size string (hash) based on the data input. If even a single bit of the data changes, the resulting hash will change significantly. This allows any alterations in data to be easily detected, thus maintaining integrity. Encrypting data, while crucial for confidentiality, does not primarily ensure integrity as it does not necessarily reveal data modifications. Enforcing strong authentication measures mainly enhances security by verifying user identity, addressing access control more squarely than data integrity itself.