Final answer:
TTL, or Time to Live, settings in databases are typically applied at the table level, meaning they govern the lifespan of data entries before they are refreshed or deleted.
Step-by-step explanation:
The TTL (Time to Live) setting is an important aspect in the context of networking and databases. In the environment of databases, particularly when discussing cache or temporary data, the TTL is typically employed at a specific level of data management. The correct answer to this question is C) Table level. TTL settings are applied to entries in databases at the level of a table, where they dictate the lifespan of a particular piece of data within the table before it is considered stale or obsolete and therefore eligible for deletion or update.