Which option is not a memory card type used in digital cameras?

• A. Secure Digital
• B. Universal Serial Bus
• C. Memory Stick
• D. CompactFlash

Answer: (B)

The main idea is telling apart memory card formats from other data interfaces. In digital cameras, the card formats are physical storage media that hold your photos. Secure Digital, Memory Stick, and CompactFlash are all examples of these removable storage formats that cameras use directly to save data. Universal Serial Bus, on the other hand, is an interface standard used to connect devices or transfer data between them. It isn’t a storage medium itself, so it isn’t a memory card type. You might read a memory card with a USB card reader or transfer files over USB, but USB describes how devices connect, not a card that stores images. So, the one that doesn’t fit as a memory card type is Universal Serial Bus.