Which one of the following is an example of Secondary storage device?

Correct option is A

Secondary storage devices are non-volatile storage devices that store data permanently or semi-permanently, even when the computer is turned off. CD-ROM (Compact Disc - Read Only Memory) is an example of a secondary storage device because it is used to store data externally and permanently.

Important Key Points:

1. CD-ROM:
• A non-volatile, optical storage device that stores data permanently.
• Data can only be read, not modified or rewritten.
• Commonly used for software distribution, music, and data backups.
2. Secondary Storage Characteristics:
• Provides long-term data storage.
• Slower than primary storage devices but offers larger capacity.

Knowledge Booster:

1. Cache Memory
• Type: Primary memory.
• Usage: Stores frequently accessed data for quick retrieval.
• Volatility: Volatile (data is lost when the power is off).
2. ROM (Read-Only Memory)
• Type: Primary memory.
• Usage: Contains firmware or boot-up instructions for the computer.
• Volatility: Non-volatile but not used for external, long-term storage.
3. RAM (Random Access Memory)
• Type: Primary memory.
• Usage: Temporarily stores data for currently running programs.
• Volatility: Volatile (data is erased when power is off).