Which type of storage is exemplified by higher cost and used for long-term data retention, as mentioned in the material?

Which type of storage is exemplified by higher cost and used for long-term data retention, as mentioned in the material?

• A. SSD
• B. RAM
• C. Cache
• D. ROM

Answer: (A)

Long-term data retention requires non-volatile storage that keeps information even when power is off. Solid-state drives provide this: they store data without power, and they come with higher capacity and performance compared with volatile memory, which is why they’re more expensive than RAM or cache. RAM and cache are designed for fast, temporary access during operation and lose their data when power is removed, so they aren’t used for preserving data long-term. ROM is non-volatile and retains firmware, but it’s usually read-only and not intended for general long-term storage of user data. So the storage type exemplified by higher cost and long-term retention is solid-state drives.

Long-term data retention requires non-volatile storage that keeps information even when power is off. Solid-state drives provide this: they store data without power, and they come with higher capacity and performance compared with volatile memory, which is why they’re more expensive than RAM or cache. RAM and cache are designed for fast, temporary access during operation and lose their data when power is removed, so they aren’t used for preserving data long-term. ROM is non-volatile and retains firmware, but it’s usually read-only and not intended for general long-term storage of user data. So the storage type exemplified by higher cost and long-term retention is solid-state drives.