<span>Switch's physical interface is something as the name itself suggests itself that it is a physical port to which you can plug in a cable or a wire based on its function and usage where as VLAN interface is no physical port but are created virtually when needed.</span>
<span>C. Documents that convey buyers, sellers, and purchases made</span>
The answers are :
JPEG - Compresses well without losing quality, it should be used for the web
TIFF - Can be saved in an uncompressed file format with a high resolution, it is a common file format used for professional print services
BMP - Can be saved in a compressed or uncompressed file format, It is a common file format used for either web or print
<span>FLV or SWF - Used to publish a rendered video for use on the web</span>