A Level Computer Science OCR Practice Exam

Which of the following describes a storage device?

1. A component that processes data

2. A medium that enables data transmission

3. A peripheral that holds data or programs

4. A device that outputs processed signals

The correct answer is: A peripheral that holds data or programs

The chosen answer correctly identifies a storage device as a peripheral that holds data or programs. Storage devices are essential components in computing, responsible for retaining digital information and ensuring that it can be retrieved when needed. This includes various types of devices such as hard drives, solid-state drives, USB flash drives, and CDs, which all serve the primary function of storing data, programs, and files for future access. This understanding distinguishes storage devices from other components in a computer system. For example, a component that processes data is typically a CPU (Central Processing Unit), which performs computations and logic operations. A medium that enables data transmission refers to networking equipment or communication lines, like cables and routers, which facilitate the transfer of data between devices rather than storing it. Lastly, a device that outputs processed signals, such as monitors or printers, displays or presents data after processing, rather than storing it for later use. Thus, the identification of option C as a storage device encapsulates its primary purpose in a computing environment effectively.