What is the primary function of a cache in a computer system?

The primary function of a cache in a computer system is indeed to serve as a temporary storage location for faster access to files. Caches are designed to store frequently accessed data so that it can be retrieved more quickly than if the system had to fetch it from the original storage location, such as a hard drive or SSD. This speeds up overall system performance as it reduces the time taken to access data, which is crucial for the efficient operation of applications and processes that rely on quick data retrieval.

Caches are typically used in various parts of a computer system, including CPU caches, web browser caches, and disk caches. Each type of cache operates with the same principle: to enhance speed by keeping a copy of commonly requested information close to the processor or user, minimizing latency and improving efficiency.

In contrast, other options like storage for long-term data, email sending methods, and security measures do not accurately describe the role of a cache. Long-term data storage relates more to hard drives and cloud storage, email pertains to communication protocols, and security measures focus on protecting data rather than improving access speed.