Alteryx Foundation Micro-Credential Practice Exam

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Which of the following is an example of an image file extension?

.mp3
.pdf
.jpg
.xml

The correct answer is: .jpg

The choice of .jpg as an example of an image file extension is accurate because .jpg (or .jpeg) is a widely recognized format for digital images. This format is extensively used for storing and compressing photographic images due to its balance between image quality and file size, making it ideal for use on the web and in various multimedia applications. JPEGs utilize lossy compression, meaning some image data is lost in the compression process, but this is often acceptable for photographs, where the focus is typically on capturing a realistic representation rather than absolute precision in color accuracy. In contrast, the other extensions mentioned serve different purposes: .mp3 is an audio file format, .pdf is a document format that can contain text and images but isn't specifically designed for images, and .xml is a markup language file format used for storing and transporting structured data without a specific focus on images. Understanding these distinctions highlights why .jpg is the correct answer as an image file extension.