Where can data at rest or storage typically be found?

Data at rest refers to inactive data stored physically in any digital form (such as files on a hard drive) that is not actively being used or transmitted. This data is maintained in various locations, and it's critical to ensure its security since it can still be vulnerable to threats such as unauthorized access or data loss.

Both external hard drives and cloud storage are common storage solutions for data at rest. External hard drives provide a physical location where data can be stored and accessed when needed, allowing users to keep files, backups, and other types of data within their local environment. On the other hand, cloud storage allows users to save their data remotely on servers managed by a cloud service provider. This enables easy access from multiple devices and locations, providing flexibility and scalability.

The inclusion of mobile devices also supports the concept of data at rest. Mobile devices, such as smartphones and tablets, store data on internal memory. Although they are often used to access data actively, the files and applications loaded on them constitute data at rest when not in use.

The combination of external hard drives and cloud storage captures a wide range of modern data storage scenarios, confirming the answer. Therefore, the correct response acknowledges that both locations are legitimate and prevalent environments for data at rest.