Which of the following is not a data representation format?

• A. Text
• B. Audio
• C. Video
• D. Transmission waves

Answer: (D)

Data representation formats are the ways information is encoded and stored for interpretation and use, such as text for characters, audio formats for sound, and video formats for moving images. Transmission waves describe the physical signal used to carry data across a medium (like air or fiber) rather than how the data itself is encoded, so they are not a data representation format. In practice, you can have data encoded as text, audio, or video, and still transmit it over various waves or channels—the encoding stays the same even as the transmission method changes.