What does Mb stand for?

• A. Megabyte
• B. Megabit
• C. Megahertz
• D. Mbps

Answer: (B)

Mb stands for megabit. In data units, the lowercase b signals bits, while the uppercase B would indicate bytes. A megabit is one million bits. The other options refer to different quantities: megabyte (MB) is eight times larger than a megabit, since a byte equals eight bits; megahertz (MHz) is a frequency unit; and megabits per second (Mbps) denotes a transfer rate, not a single data size. In practice, speeds are given in Mbps, while storage sizes use MB. So the correct interpretation of Mb is megabit.