What is the purpose of a memory parity bit? MCQ with Answer and Explanation

Explanation:
A sector is the smallest unit of data that can be read or written on a hard disk, typically 512 bytes or 4 KB in modern drives.

Explanation:
SRAM is more expensive per bit than DRAM because it uses more transistors per bit. It is faster and does not need refreshing, but is not used as main memory due to cost.

Explanation:
7200 RPM is common for desktop HDDs, while 5400 RPM is for energy-efficient or external drives. High-performance drives may be 10,000 RPM or more, but 7200 is standard.