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Data Storage (GCSE Computing)

The following is a GCSE Computing test covering 'Data Storage' from the broader topic 3. Hardware. The test is geared towards the CAMBRIGE-IGCSE exam board style syllabus.
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Which of these storage devices would usually require the least maintenance (e.g., no need for defragmentation)?
What is a key advantage of an SSD compared with an HDD?
What does "seek time" refer to in the context of a hard disk drive?
What is the primary reason SSDs have a limited write endurance compared to HDDs?
Why is wear-leveling used in flash-based storage like SSDs and USB flash drives?
Which storage media is most suitable for very cheap, long-term offline backup with low access frequency?
When comparing HDD and SSD, which has typically higher read/write latency for random access?
Which of these is a benefit of using solid-state storage in laptops?
Which of the following is the smallest unit of digital storage?
Which of the following is true about file fragmentation on HDDs?
Which hardware feature on many drives helps to detect and correct small data errors automatically?