Which of the following memory/storage devices are considered as offline…

CONCEPT

Offline storage is data storage that is not continuously connected to a computer.

A removable medium becomes accessible only when it is inserted or attached, and it can be stored separately after use.

APPLICATION

Apply the connection criterion to each listed device:

1. A hard disk drive, when used as the computer’s installed internal drive, remains connected and immediately accessible, so it is treated as online storage in this classification.

2. Blu-ray discs and DVD/CD media are removable optical media; they must be inserted into a compatible drive for access.

3. A USB memory stick is removable flash storage; it is attached through a USB port for use and can then be disconnected.

CONTRAST

• The set containing the hard disk drive, Blu-ray disk, and DVD/CD includes the typically installed drive and leaves out the removable USB memory stick.

• The set containing the hard disk drive, DVD/CD, and USB memory stick includes the typically installed drive and leaves out the removable Blu-ray disk.

• The set containing the Blu-ray disk, DVD/CD, and USB memory stick contains the three removable media and no typically installed drive.

• The set containing all four devices adds the typically installed hard disk drive to the three removable media.

CROSS-CHECK

The removable and normally disconnected devices are Blu-ray disk, DVD/CD, and USB memory stick. This corresponds to B, C and D only.

Therefore, the correct combination is B, C and D only.