What is the role of a write buffer in memory? MCQ with Answer and Explanation

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.

Explanation:
A USB pen drive (or flash drive) is an external plug-and-play storage device that uses non-volatile NAND flash memory to interface via USB ports.

Explanation:
1x Blu-ray = 4.5 MB/s (36 Mbps). 6x = 6 * 4.5 = 27 MB/s.