B. Integrity
The fixed-length value that a hash function computes from its input. Hashes have many important jobs in computing, but in networking they are primarily used for authentication and ensuring data integrity
The correct answer is:
B. Integrity
A hash provides integrity by generating a fixed-length unique representation (hash value) of data. If the data is altered, even slightly, the hash value will change, allowing verification that the data has not been tampered with. Hashes do not provide confidentiality, non-repudiation, or availability.
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