Question

Choose the most common auxiliary memory device.

• A. RAM and ROM
• B. Cache and Registers
• C. Cache and magnetic disks
• D. Magnetic disks and tapes

Hint:

Primary Memory: Registers, Cache, RAM, ROM Secondary (Auxiliary) Memory: Magnetic Disks, Tapes, SSDs, Optical Disks

Answer 1

The Correct Option is D

Concept: Auxiliary memory is also called secondary storage. It is used for long-term storage of data and programs. Unlike primary memory, auxiliary memory retains information even when power is turned off. Common auxiliary storage devices include:
• Magnetic disks
• Magnetic tapes
• Optical disks
• Solid-state drives

Step 1: Understand primary memory.
RAM, ROM, cache memory, and registers belong to primary memory. They are directly accessible by the CPU.

Step 2: Understand auxiliary memory.
Auxiliary memory provides permanent storage. Historically, magnetic disks and magnetic tapes have been the most common forms of secondary storage.

Step 3: Compare the options.
Options (A), (B), and (C) contain primary memory devices. Only option (D) contains purely auxiliary storage devices.

Step 4: Write the answer.
Therefore, \[ \boxed{\text{Magnetic Disks and Tapes}} \] Hence option (D) is correct.