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Which of the following options is a secondary storage device in a computer?
1. RAM
2. ROM
3. Hard Disk
4. Cache

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Correct Answer - Option 3 : Hard Disk

The correct answer is Hard Disk.

  • Hard Disk is a secondary storage device in a computer.

  • Storage Unit
    • A storage device is a piece of hardware that is primarily used for storing data.
    • Digital storage is measured in megabytes (MB), gigabytes (GB), and, these days, terabytes (TB).
    • Computer memory is of two basic type –
      • Primary memory (RAM and ROM)
      • Secondary memory (hard drive, CD, etc.)


  • Random Access Memory (RAM)
    • It is primary-volatile memory.
  • Read-Only Memory (ROM)
    • It is primary-non-volatile memory.
    • It is also called read-write memory or the main memory or the primary memory.
  • Cache
    • A cache is a reserved storage location that collects temporary data to help websites, browsers, and apps load faster.

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