What type of data does a cache typically store?

A cache is designed specifically to store temporary files that help speed up the loading of frequently accessed data and resources. The primary purpose of caching is to improve the performance of applications and systems by reducing the time it takes to retrieve information that has been used recently. This can include web pages, images, or other types of data that can be quickly retrieved rather than having to access the original source every time.

When a user visits a webpage, for example, the cache saves elements of that page so that the next time the user navigates to the same site, the browser can load some components directly from the cache rather than downloading them again from the internet. This results in significantly faster loading times and improved overall efficiency.

Other types of data, such as permanent files from user downloads, security settings for user accounts, and emails or messaging content, do not typically belong in a cache. These data types are either meant to be stored long-term, to maintain security configurations, or to facilitate message communication rather than providing the speed advantage that caching offers. Thus, option C accurately describes the function of a cache in computer systems.