Which term identifies a data file's format by a trailing period and letters?

Which term identifies a data file's format by a trailing period and letters?

• A. Bug
• B. Pixel
• C. File Extension
• D. Enhanced Screen Tip

Answer: (C)

File extensions are the suffix after the dot in a filename that signals the file’s format and helps the system decide how to handle the file. The letters after the period tell you what type of data it contains (for example, txt for plain text, jpg for an image, pdf for a document) and guide the appropriate program to open it. This naming convention makes it easy to recognize and interact with files across different software and platforms. The other terms don’t describe this concept: a bug is a software error, a pixel is a tiny element on a display, and an Enhanced Screen Tip is a UI tooltip.

File extensions are the suffix after the dot in a filename that signals the file’s format and helps the system decide how to handle the file. The letters after the period tell you what type of data it contains (for example, txt for plain text, jpg for an image, pdf for a document) and guide the appropriate program to open it. This naming convention makes it easy to recognize and interact with files across different software and platforms. The other terms don’t describe this concept: a bug is a software error, a pixel is a tiny element on a display, and an Enhanced Screen Tip is a UI tooltip.