Which description defines an external hard disk?

Which description defines an external hard disk?

• A. A cloud storage service
• B. A built-in storage drive inside a laptop
• C. A USB flash drive
• D. A separate freestanding storage device that connects with a cable to a USB port or other port on a computer or mobile device

Answer: (D)

An external hard disk is a separate, freestanding storage device that connects to a computer or mobile device with a cable such as USB (or another interface). It sits outside the device’s own case and provides extra space for files, backups, and media. Inside the enclosure is a traditional hard disk drive or a solid‑state drive, giving you large capacity in a portable package. This setup is different from cloud storage, which is online rather than a physical device, and from an internal drive, which is built into the computer. You might also encounter a USB flash drive as external storage, but that uses flash memory in a small stick form rather than a full hard disk within an enclosure.

An external hard disk is a separate, freestanding storage device that connects to a computer or mobile device with a cable such as USB (or another interface). It sits outside the device’s own case and provides extra space for files, backups, and media. Inside the enclosure is a traditional hard disk drive or a solid‑state drive, giving you large capacity in a portable package. This setup is different from cloud storage, which is online rather than a physical device, and from an internal drive, which is built into the computer. You might also encounter a USB flash drive as external storage, but that uses flash memory in a small stick form rather than a full hard disk within an enclosure.