A Level Computer Science OCR Practice Exam

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Which of the following types of storage is characterized by being generally more expensive?

Hard Disk Drive
Flash Storage
Magnetic Storage
Random Access Memory

The correct answer is: Flash Storage

Flash storage is characterized by being generally more expensive than other storage types due to its advanced technology and faster performance. Flash storage, which includes options such as solid-state drives (SSDs) and USB flash drives, uses NAND-based memory that allows for much quicker read and write speeds compared to traditional hard disk drives (HDDs). This enhanced speed and reliability make it particularly suitable for tasks that require rapid access to data, such as booting up an operating system, running applications, or transferring large files. The cost of flash storage relative to its performance benefits is typically higher than that of hard disk drives or magnetic storage, which utilize spinning platters and mechanical arms for data access. Additionally, random access memory (RAM), while also more expensive than some magnetic storage options, serves a different purpose as volatile memory used for temporary data storage while a computer is running. Overall, the premium associated with flash storage is justified by its speed, durability, and efficiency, which explains why it is considered more expensive.