USB-type storage device is—
Verified Answer
A. (a) Secondary
B. (b) Anxillary
C. (c) Tertiary
D. (d) Primary
Explanation:
Option (a) Secondary is the correct answer. USB-type storage devices, such as flash drives, are classified as secondary storage. They are non-volatile, external or removable, and used for long-term storage of data, not for direct, active processing by the CPU. Option (d) Primary storage (e.g., RAM) is directly accessible by the CPU for active data. Option (c) Tertiary storage is for archival data, typically involving robotic systems (e.g., tape libraries). Option (b) Ancillary is not a standard classification for computer storage hierarchy.