What term refers to external storage devices used to supplement the primary storage?

What term refers to external storage devices used to supplement the primary storage?

• A. Primary Memory
• B. Central Processing Unit
• C. Auxiliary Storage Devices
• D. Cache

Answer: (C)

Storage hierarchy uses a distinction between fast, volatile primary memory and larger, non-volatile storage that helps hold data when it’s not actively in use. External storage devices that supplement the primary memory are called auxiliary storage devices. These provide persistent, long-term storage and much greater capacity, though access is slower than RAM. Primary memory refers to RAM, which is fast but limited and loses data when powered off. The CPU is the processor itself, not a storage device. Cache is a tiny, very fast storage near the CPU to speed up access to frequently used data, not external storage. So the term that fits external storage used to supplement the primary memory is auxiliary storage devices.

Storage hierarchy uses a distinction between fast, volatile primary memory and larger, non-volatile storage that helps hold data when it’s not actively in use. External storage devices that supplement the primary memory are called auxiliary storage devices. These provide persistent, long-term storage and much greater capacity, though access is slower than RAM. Primary memory refers to RAM, which is fast but limited and loses data when powered off. The CPU is the processor itself, not a storage device. Cache is a tiny, very fast storage near the CPU to speed up access to frequently used data, not external storage. So the term that fits external storage used to supplement the primary memory is auxiliary storage devices.