Which of the following terms refers to an anti-virus software file that is updated from time to time to protect a computer from new viruses?

An anti-virus "definition" (also known as a signature file or virus definition file) contains known patterns, characteristics, and digital signatures of viruses and other malware, which the anti-virus software uses to identify and protect against new threats through regular updates.

Modules refer to components of a software program and are not the specific term for the updated threat intelligence used by antivirus software.

A service pack is a collection of updates, fixes, and enhancements for a software product, typically released as a single installable package, and it applies to the operating system or application itself, not specifically antivirus threat data.

A hotfix is a single, cumulative package that includes one or more files to address a problem in a software product, typically a specific bug, and is not the term for constantly updated virus information.