Which of the following statements about computer memories is correct?

Correct option is A

HDDs (Hard Disk Drives) may experience a " head crash," which occurs when the read/write head of the HDD touches or scrapes the magnetic disk surface, potentially causing data loss and damage. HDDs have moving parts, which is why such physical damage can occur.
Information Booster:
1. HDDs (Hard Disk Drives) are mechanical storage devices that store data on rotating magnetic disks. The read/write head hovers just above the surface of the disks, and a head crash happens if it makes contact.
2. SSDs (Solid State Drives) are non-volatile memory, meaning they retain data even when powered off, and do not have moving parts. SSDs are faster and more durable than HDDs.
3. Primary memory (RAM) is typically smaller in size compared to secondary memory (like HDDs or SSDs), as secondary memory is designed for larger, long-term storage.
4. Volatile memory, such as RAM, loses its data when power is turned off, whereas non-volatile memory, like SSDs and HDDs, retains data even when the computer is powered down.
Additional Information
· (b) SSDs are also known as volatile memory: Incorrect. SSDs are non-volatile, meaning they retain data without power.
· (c) HDDs do not have any moving parts: Incorrect. HDDs have mechanical moving parts, including spinning platters and read/write heads.
· (d) Computers usually have more primary memory than secondary memory: Incorrect. Computers generally have much more secondary memory (like HDDs or SSDs) compared to primary memory (RAM).