Which of the following best describes a linkage record?

• A. A log of user login events
• B. A map for a template indicating how to network to an unrecognized master file
• C. A data export file
• D. A cache of last queries

Answer: (C)

A linkage record is the data artifact that carries the links between related data when moving or integrating information between systems. It represents how records connect across files or databases, so the item that best describes it is the data export file—this is the kind of file that contains the data and the necessary structure to transfer and re-establish those connections in another system. The other options don’t fit because a log of user login events is for auditing access, a map for a template about networking to an unrecognized master file describes template routing rather than linking data, and a cache of last queries is about speeding up repeated requests, not about linking data across systems.